20863006840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40121167}}^1$

素因数の和:40121191

約数の個数: 32

約数和(自身を含む): 50552671680

約数和(自身を除く): 29689664840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40121167, 80242334, 160484668, 200605835, 320969336, 401211670, 521575171, 802423340, 1043150342, 1604846680, 2086300684, 2607875855, 4172601368, 5215751710, 10431503420, 20863006840]

約数ペア:

[(1, 20863006840), (2, 10431503420), (4, 5215751710), (5, 4172601368), (8, 2607875855), (10, 2086300684), (13, 1604846680), (20, 1043150342), (26, 802423340), (40, 521575171), (52, 401211670), (65, 320969336), (104, 200605835), (130, 160484668), (260, 80242334), (520, 40121167)]