21515673621

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1\times {\mathrm{479}}^1$

素因数の和:874

約数の個数: 64

約数和(自身を含む): 31997952000

約数和(自身を除く): 10482278379

約数列:

[1, 3, 13, 39, 61, 79, 183, 237, 239, 479, 717, 793, 1027, 1437, 2379, 3081, 3107, 4819, 6227, 9321, 14457, 14579, 18681, 18881, 29219, 37841, 43737, 56643, 62647, 87657, 113523, 114481, 187941, 189527, 245453, 343443, 379847, 491933, 568581, 736359, 1139541, 1151741, 1475799, 1488253, 2308301, 3455223, 4464759, 6924903, 6983341, 9043999, 14972633, 20950023, 27131997, 30007913, 44917899, 90023739, 90783433, 117571987, 272350299, 352715961, 551683939, 1655051817, 7171891207, 21515673621]

約数ペア:

[(1, 21515673621), (3, 7171891207), (13, 1655051817), (39, 551683939), (61, 352715961), (79, 272350299), (183, 117571987), (237, 90783433), (239, 90023739), (479, 44917899), (717, 30007913), (793, 27131997), (1027, 20950023), (1437, 14972633), (2379, 9043999), (3081, 6983341), (3107, 6924903), (4819, 4464759), (6227, 3455223), (9321, 2308301), (14457, 1488253), (14579, 1475799), (18681, 1151741), (18881, 1139541), (29219, 736359), (37841, 568581), (43737, 491933), (56643, 379847), (62647, 343443), (87657, 245453), (113523, 189527), (114481, 187941)]