20696130

素因数分解:

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

素因数の和:78

約数の個数: 216

約数和(自身を含む): 71144892

約数和(自身を除く): 50448762

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 19, 21, 26, 30, 35, 38, 39, 42, 45, 49, 57, 63, 65, 70, 78, 90, 91, 95, 98, 105, 114, 117, 126, 130, 133, 147, 171, 182, 190, 195, 210, 234, 245, 247, 266, 273, 285, 294, 315, 342, 361, 390, 399, 441, 455, 490, 494, 546, 570, 585, 630, 637, 665, 722, 735, 741, 798, 819, 855, 882, 910, 931, 1083, 1170, 1197, 1235, 1274, 1330, 1365, 1470, 1482, 1638, 1710, 1729, 1805, 1862, 1911, 1995, 2166, 2205, 2223, 2394, 2470, 2527, 2730, 2793, 3185, 3249, 3458, 3610, 3705, 3822, 3990, 4095, 4410, 4446, 4655, 4693, 5054, 5187, 5415, 5586, 5733, 5985, 6370, 6498, 7410, 7581, 8190, 8379, 8645, 9310, 9386, 9555, 10374, 10830, 11115, 11466, 11970, 12103, 12635, 13965, 14079, 15162, 15561, 16245, 16758, 17290, 17689, 19110, 22230, 22743, 23465, 24206, 25270, 25935, 27930, 28158, 28665, 31122, 32490, 32851, 35378, 36309, 37905, 41895, 42237, 45486, 46930, 51870, 53067, 57330, 60515, 65702, 70395, 72618, 75810, 77805, 83790, 84474, 88445, 98553, 106134, 108927, 113715, 121030, 140790, 155610, 159201, 164255, 176890, 181545, 197106, 211185, 217854, 227430, 229957, 265335, 295659, 318402, 328510, 363090, 422370, 459914, 492765, 530670, 544635, 591318, 689871, 796005, 985530, 1089270, 1149785, 1379742, 1478295, 1592010, 2069613, 2299570, 2956590, 3449355, 4139226, 6898710, 10348065, 20696130]

約数ペア:

[(1, 20696130), (2, 10348065), (3, 6898710), (5, 4139226), (6, 3449355), (7, 2956590), (9, 2299570), (10, 2069613), (13, 1592010), (14, 1478295), (15, 1379742), (18, 1149785), (19, 1089270), (21, 985530), (26, 796005), (30, 689871), (35, 591318), (38, 544635), (39, 530670), (42, 492765), (45, 459914), (49, 422370), (57, 363090), (63, 328510), (65, 318402), (70, 295659), (78, 265335), (90, 229957), (91, 227430), (95, 217854), (98, 211185), (105, 197106), (114, 181545), (117, 176890), (126, 164255), (130, 159201), (133, 155610), (147, 140790), (171, 121030), (182, 113715), (190, 108927), (195, 106134), (210, 98553), (234, 88445), (245, 84474), (247, 83790), (266, 77805), (273, 75810), (285, 72618), (294, 70395), (315, 65702), (342, 60515), (361, 57330), (390, 53067), (399, 51870), (441, 46930), (455, 45486), (490, 42237), (494, 41895), (546, 37905), (570, 36309), (585, 35378), (630, 32851), (637, 32490), (665, 31122), (722, 28665), (735, 28158), (741, 27930), (798, 25935), (819, 25270), (855, 24206), (882, 23465), (910, 22743), (931, 22230), (1083, 19110), (1170, 17689), (1197, 17290), (1235, 16758), (1274, 16245), (1330, 15561), (1365, 15162), (1470, 14079), (1482, 13965), (1638, 12635), (1710, 12103), (1729, 11970), (1805, 11466), (1862, 11115), (1911, 10830), (1995, 10374), (2166, 9555), (2205, 9386), (2223, 9310), (2394, 8645), (2470, 8379), (2527, 8190), (2730, 7581), (2793, 7410), (3185, 6498), (3249, 6370), (3458, 5985), (3610, 5733), (3705, 5586), (3822, 5415), (3990, 5187), (4095, 5054), (4410, 4693), (4446, 4655)]