20853040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20051}}^1$

素因数の和:20077

約数の個数: 40

約数和(自身を含む): 52215408

約数和(自身を除く): 31362368

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20051, 40102, 80204, 100255, 160408, 200510, 260663, 320816, 401020, 521326, 802040, 1042652, 1303315, 1604080, 2085304, 2606630, 4170608, 5213260, 10426520, 20853040]

約数ペア:

[(1, 20853040), (2, 10426520), (4, 5213260), (5, 4170608), (8, 2606630), (10, 2085304), (13, 1604080), (16, 1303315), (20, 1042652), (26, 802040), (40, 521326), (52, 401020), (65, 320816), (80, 260663), (104, 200510), (130, 160408), (208, 100255), (260, 80204), (520, 40102), (1040, 20051)]