640957590

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1373}}^1$

素因数の和:1428

約数の個数: 256

約数和(自身を含む): 2215987200

約数和(自身を除く): 1575029610

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 19, 21, 26, 27, 30, 35, 38, 39, 42, 45, 54, 57, 63, 65, 70, 78, 90, 91, 95, 105, 114, 117, 126, 130, 133, 135, 171, 182, 189, 190, 195, 210, 234, 247, 266, 270, 273, 285, 315, 342, 351, 378, 390, 399, 455, 494, 513, 546, 570, 585, 630, 665, 702, 741, 798, 819, 855, 910, 945, 1026, 1170, 1197, 1235, 1330, 1365, 1373, 1482, 1638, 1710, 1729, 1755, 1890, 1995, 2223, 2394, 2457, 2470, 2565, 2730, 2746, 3458, 3510, 3591, 3705, 3990, 4095, 4119, 4446, 4914, 5130, 5187, 5985, 6669, 6865, 7182, 7410, 8190, 8238, 8645, 9611, 10374, 11115, 11970, 12285, 12357, 13338, 13730, 15561, 17290, 17849, 17955, 19222, 20595, 22230, 24570, 24714, 25935, 26087, 28833, 31122, 33345, 35698, 35910, 37071, 41190, 46683, 48055, 51870, 52174, 53547, 57666, 61785, 66690, 74142, 77805, 78261, 86499, 89245, 93366, 96110, 107094, 123570, 124943, 130435, 144165, 155610, 156522, 160641, 172998, 178490, 182609, 185355, 233415, 234783, 249886, 259497, 260870, 267735, 288330, 321282, 339131, 365218, 370710, 374829, 391305, 432495, 466830, 469566, 481923, 518994, 535470, 547827, 624715, 678262, 704349, 749658, 782610, 803205, 864990, 913045, 963846, 1017393, 1095654, 1124487, 1173915, 1249430, 1297485, 1408698, 1606410, 1643481, 1695655, 1826090, 1874145, 2034786, 2248974, 2347830, 2373917, 2409615, 2594970, 2739135, 3052179, 3286962, 3373461, 3391310, 3521745, 3748290, 4747834, 4819230, 4930443, 5086965, 5478270, 5622435, 6104358, 6746922, 7043490, 7121751, 8217405, 9156537, 9860886, 10173930, 11244870, 11869585, 14243502, 15260895, 16434810, 16867305, 18313074, 21365253, 23739170, 24652215, 30521790, 33734610, 35608755, 42730506, 45782685, 49304430, 64095759, 71217510, 91565370, 106826265, 128191518, 213652530, 320478795, 640957590]

約数ペア:

[(1, 640957590), (2, 320478795), (3, 213652530), (5, 128191518), (6, 106826265), (7, 91565370), (9, 71217510), (10, 64095759), (13, 49304430), (14, 45782685), (15, 42730506), (18, 35608755), (19, 33734610), (21, 30521790), (26, 24652215), (27, 23739170), (30, 21365253), (35, 18313074), (38, 16867305), (39, 16434810), (42, 15260895), (45, 14243502), (54, 11869585), (57, 11244870), (63, 10173930), (65, 9860886), (70, 9156537), (78, 8217405), (90, 7121751), (91, 7043490), (95, 6746922), (105, 6104358), (114, 5622435), (117, 5478270), (126, 5086965), (130, 4930443), (133, 4819230), (135, 4747834), (171, 3748290), (182, 3521745), (189, 3391310), (190, 3373461), (195, 3286962), (210, 3052179), (234, 2739135), (247, 2594970), (266, 2409615), (270, 2373917), (273, 2347830), (285, 2248974), (315, 2034786), (342, 1874145), (351, 1826090), (378, 1695655), (390, 1643481), (399, 1606410), (455, 1408698), (494, 1297485), (513, 1249430), (546, 1173915), (570, 1124487), (585, 1095654), (630, 1017393), (665, 963846), (702, 913045), (741, 864990), (798, 803205), (819, 782610), (855, 749658), (910, 704349), (945, 678262), (1026, 624715), (1170, 547827), (1197, 535470), (1235, 518994), (1330, 481923), (1365, 469566), (1373, 466830), (1482, 432495), (1638, 391305), (1710, 374829), (1729, 370710), (1755, 365218), (1890, 339131), (1995, 321282), (2223, 288330), (2394, 267735), (2457, 260870), (2470, 259497), (2565, 249886), (2730, 234783), (2746, 233415), (3458, 185355), (3510, 182609), (3591, 178490), (3705, 172998), (3990, 160641), (4095, 156522), (4119, 155610), (4446, 144165), (4914, 130435), (5130, 124943), (5187, 123570), (5985, 107094), (6669, 96110), (6865, 93366), (7182, 89245), (7410, 86499), (8190, 78261), (8238, 77805), (8645, 74142), (9611, 66690), (10374, 61785), (11115, 57666), (11970, 53547), (12285, 52174), (12357, 51870), (13338, 48055), (13730, 46683), (15561, 41190), (17290, 37071), (17849, 35910), (17955, 35698), (19222, 33345), (20595, 31122), (22230, 28833), (24570, 26087), (24714, 25935)]