25997140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{99989}}^1$

素因数の和:100011

約数の個数: 24

約数和(自身を含む): 58794120

約数和(自身を除く): 32796980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 99989, 199978, 399956, 499945, 999890, 1299857, 1999780, 2599714, 5199428, 6499285, 12998570, 25997140]

約数ペア:

[(1, 25997140), (2, 12998570), (4, 6499285), (5, 5199428), (10, 2599714), (13, 1999780), (20, 1299857), (26, 999890), (52, 499945), (65, 399956), (130, 199978), (260, 99989)]