208605820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{4259}}^1$

素因数の和:4378

約数の個数: 48

約数和(自身を含む): 458035200

約数和(自身を除く): 249429380

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 79, 124, 155, 158, 310, 316, 395, 620, 790, 1580, 2449, 4259, 4898, 8518, 9796, 12245, 17036, 21295, 24490, 42590, 48980, 85180, 132029, 264058, 336461, 528116, 660145, 672922, 1320290, 1345844, 1682305, 2640580, 3364610, 6729220, 10430291, 20860582, 41721164, 52151455, 104302910, 208605820]

約数ペア:

[(1, 208605820), (2, 104302910), (4, 52151455), (5, 41721164), (10, 20860582), (20, 10430291), (31, 6729220), (62, 3364610), (79, 2640580), (124, 1682305), (155, 1345844), (158, 1320290), (310, 672922), (316, 660145), (395, 528116), (620, 336461), (790, 264058), (1580, 132029), (2449, 85180), (4259, 48980), (4898, 42590), (8518, 24490), (9796, 21295), (12245, 17036)]