20175135920

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1547173}}^1$

素因数の和:1547349

約数の個数: 40

約数和(自身を含む): 47194995696

約数和(自身を除く): 27019859776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6520, 13040, 1547173, 3094346, 6188692, 7735865, 12377384, 15471730, 24754768, 30943460, 61886920, 123773840, 252189199, 504378398, 1008756796, 1260945995, 2017513592, 2521891990, 4035027184, 5043783980, 10087567960, 20175135920]

約数ペア:

[(1, 20175135920), (2, 10087567960), (4, 5043783980), (5, 4035027184), (8, 2521891990), (10, 2017513592), (16, 1260945995), (20, 1008756796), (40, 504378398), (80, 252189199), (163, 123773840), (326, 61886920), (652, 30943460), (815, 24754768), (1304, 15471730), (1630, 12377384), (2608, 7735865), (3260, 6188692), (6520, 3094346), (13040, 1547173)]