8345560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 20160000

約数和(自身を除く): 11814440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 139, 152, 158, 190, 278, 316, 380, 395, 556, 632, 695, 760, 790, 1112, 1390, 1501, 1580, 2641, 2780, 3002, 3160, 5282, 5560, 6004, 7505, 10564, 10981, 12008, 13205, 15010, 21128, 21962, 26410, 30020, 43924, 52820, 54905, 60040, 87848, 105640, 109810, 208639, 219620, 417278, 439240, 834556, 1043195, 1669112, 2086390, 4172780, 8345560]

約数ペア:

[(1, 8345560), (2, 4172780), (4, 2086390), (5, 1669112), (8, 1043195), (10, 834556), (19, 439240), (20, 417278), (38, 219620), (40, 208639), (76, 109810), (79, 105640), (95, 87848), (139, 60040), (152, 54905), (158, 52820), (190, 43924), (278, 30020), (316, 26410), (380, 21962), (395, 21128), (556, 15010), (632, 13205), (695, 12008), (760, 10981), (790, 10564), (1112, 7505), (1390, 6004), (1501, 5560), (1580, 5282), (2641, 3160), (2780, 3002)]