21304821915

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{349}}^2$

素因数の和:758

約数の個数: 108

約数和(自身を含む): 41846000976

約数和(自身を除く): 20541179061

約数列:

[1, 3, 5, 9, 13, 15, 23, 39, 45, 65, 69, 115, 117, 169, 195, 207, 299, 345, 349, 507, 585, 845, 897, 1035, 1047, 1495, 1521, 1745, 2535, 2691, 3141, 3887, 4485, 4537, 5235, 7605, 8027, 11661, 13455, 13611, 15705, 19435, 22685, 24081, 34983, 40135, 40833, 58305, 58981, 68055, 72243, 104351, 120405, 121801, 174915, 176943, 204165, 294905, 313053, 361215, 365403, 521755, 530829, 609005, 884715, 939159, 1096209, 1356563, 1565265, 1583413, 1827015, 2654145, 2801423, 4069689, 4695795, 4750239, 5481045, 6782815, 7917065, 8404269, 12209067, 14007115, 14250717, 20348445, 20584369, 23751195, 25212807, 36418499, 42021345, 61045335, 61753107, 71253585, 102921845, 109255497, 126064035, 182092495, 185259321, 308765535, 327766491, 473440487, 546277485, 926296605, 1420321461, 1638832455, 2367202435, 4260964383, 7101607305, 21304821915]

約数ペア:

[(1, 21304821915), (3, 7101607305), (5, 4260964383), (9, 2367202435), (13, 1638832455), (15, 1420321461), (23, 926296605), (39, 546277485), (45, 473440487), (65, 327766491), (69, 308765535), (115, 185259321), (117, 182092495), (169, 126064035), (195, 109255497), (207, 102921845), (299, 71253585), (345, 61753107), (349, 61045335), (507, 42021345), (585, 36418499), (845, 25212807), (897, 23751195), (1035, 20584369), (1047, 20348445), (1495, 14250717), (1521, 14007115), (1745, 12209067), (2535, 8404269), (2691, 7917065), (3141, 6782815), (3887, 5481045), (4485, 4750239), (4537, 4695795), (5235, 4069689), (7605, 2801423), (8027, 2654145), (11661, 1827015), (13455, 1583413), (13611, 1565265), (15705, 1356563), (19435, 1096209), (22685, 939159), (24081, 884715), (34983, 609005), (40135, 530829), (40833, 521755), (58305, 365403), (58981, 361215), (68055, 313053), (72243, 294905), (104351, 204165), (120405, 176943), (121801, 174915)]