20281170

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:89

約数の個数: 256

約数和(自身を含む): 69672960

約数和(自身を除く): 49391790

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 17, 19, 21, 23, 26, 30, 34, 35, 38, 39, 42, 46, 51, 57, 65, 69, 70, 78, 85, 91, 95, 102, 105, 114, 115, 119, 130, 133, 138, 161, 170, 182, 190, 195, 210, 221, 230, 238, 247, 255, 266, 273, 285, 299, 322, 323, 345, 357, 390, 391, 399, 437, 442, 455, 483, 494, 510, 546, 570, 595, 598, 646, 663, 665, 690, 714, 741, 782, 798, 805, 874, 897, 910, 966, 969, 1105, 1173, 1190, 1235, 1311, 1326, 1330, 1365, 1482, 1495, 1547, 1610, 1615, 1729, 1785, 1794, 1938, 1955, 1995, 2093, 2185, 2210, 2261, 2346, 2415, 2470, 2622, 2730, 2737, 2990, 3059, 3094, 3230, 3315, 3458, 3570, 3705, 3910, 3990, 4186, 4199, 4370, 4485, 4522, 4641, 4830, 4845, 5083, 5187, 5474, 5681, 5865, 6118, 6279, 6555, 6630, 6783, 7410, 7429, 7735, 8211, 8398, 8645, 8970, 9177, 9282, 9690, 10166, 10374, 10465, 11305, 11362, 11730, 12558, 12597, 13110, 13566, 13685, 14858, 15249, 15295, 15470, 16422, 17043, 17290, 18354, 20930, 20995, 22287, 22610, 23205, 25194, 25415, 25935, 27370, 28405, 29393, 30498, 30590, 31395, 33915, 34086, 35581, 37145, 39767, 41055, 41990, 44574, 45885, 46410, 50830, 51870, 52003, 56810, 58786, 62790, 62985, 67830, 71162, 74290, 76245, 79534, 82110, 85215, 88179, 91770, 96577, 104006, 106743, 111435, 119301, 125970, 146965, 152490, 156009, 170430, 176358, 177905, 193154, 198835, 213486, 222870, 238602, 260015, 289731, 293930, 312018, 355810, 397670, 440895, 482885, 520030, 533715, 579462, 596505, 676039, 780045, 881790, 965770, 1067430, 1193010, 1352078, 1448655, 1560090, 2028117, 2897310, 3380195, 4056234, 6760390, 10140585, 20281170]

約数ペア:

[(1, 20281170), (2, 10140585), (3, 6760390), (5, 4056234), (6, 3380195), (7, 2897310), (10, 2028117), (13, 1560090), (14, 1448655), (15, 1352078), (17, 1193010), (19, 1067430), (21, 965770), (23, 881790), (26, 780045), (30, 676039), (34, 596505), (35, 579462), (38, 533715), (39, 520030), (42, 482885), (46, 440895), (51, 397670), (57, 355810), (65, 312018), (69, 293930), (70, 289731), (78, 260015), (85, 238602), (91, 222870), (95, 213486), (102, 198835), (105, 193154), (114, 177905), (115, 176358), (119, 170430), (130, 156009), (133, 152490), (138, 146965), (161, 125970), (170, 119301), (182, 111435), (190, 106743), (195, 104006), (210, 96577), (221, 91770), (230, 88179), (238, 85215), (247, 82110), (255, 79534), (266, 76245), (273, 74290), (285, 71162), (299, 67830), (322, 62985), (323, 62790), (345, 58786), (357, 56810), (390, 52003), (391, 51870), (399, 50830), (437, 46410), (442, 45885), (455, 44574), (483, 41990), (494, 41055), (510, 39767), (546, 37145), (570, 35581), (595, 34086), (598, 33915), (646, 31395), (663, 30590), (665, 30498), (690, 29393), (714, 28405), (741, 27370), (782, 25935), (798, 25415), (805, 25194), (874, 23205), (897, 22610), (910, 22287), (966, 20995), (969, 20930), (1105, 18354), (1173, 17290), (1190, 17043), (1235, 16422), (1311, 15470), (1326, 15295), (1330, 15249), (1365, 14858), (1482, 13685), (1495, 13566), (1547, 13110), (1610, 12597), (1615, 12558), (1729, 11730), (1785, 11362), (1794, 11305), (1938, 10465), (1955, 10374), (1995, 10166), (2093, 9690), (2185, 9282), (2210, 9177), (2261, 8970), (2346, 8645), (2415, 8398), (2470, 8211), (2622, 7735), (2730, 7429), (2737, 7410), (2990, 6783), (3059, 6630), (3094, 6555), (3230, 6279), (3315, 6118), (3458, 5865), (3570, 5681), (3705, 5474), (3910, 5187), (3990, 5083), (4186, 4845), (4199, 4830), (4370, 4641), (4485, 4522)]