81287336

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2058

約数の個数: 64

約数和(自身を含む): 181440000

約数和(自身を除く): 100152664

約数列:

[1, 2, 4, 8, 13, 17, 23, 26, 34, 46, 52, 68, 92, 104, 136, 184, 221, 299, 391, 442, 598, 782, 884, 1196, 1564, 1768, 1999, 2392, 3128, 3998, 5083, 7996, 10166, 15992, 20332, 25987, 33983, 40664, 45977, 51974, 67966, 91954, 103948, 135932, 183908, 207896, 271864, 367816, 441779, 597701, 781609, 883558, 1195402, 1563218, 1767116, 2390804, 3126436, 3534232, 4781608, 6252872, 10160917, 20321834, 40643668, 81287336]

約数ペア:

[(1, 81287336), (2, 40643668), (4, 20321834), (8, 10160917), (13, 6252872), (17, 4781608), (23, 3534232), (26, 3126436), (34, 2390804), (46, 1767116), (52, 1563218), (68, 1195402), (92, 883558), (104, 781609), (136, 597701), (184, 441779), (221, 367816), (299, 271864), (391, 207896), (442, 183908), (598, 135932), (782, 103948), (884, 91954), (1196, 67966), (1564, 51974), (1768, 45977), (1999, 40664), (2392, 33983), (3128, 25987), (3998, 20332), (5083, 15992), (7996, 10166)]