201526520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{387551}}^1$

素因数の和:387575

約数の個数: 32

約数和(自身を含む): 488315520

約数和(自身を除く): 286789000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 387551, 775102, 1550204, 1937755, 3100408, 3875510, 5038163, 7751020, 10076326, 15502040, 20152652, 25190815, 40305304, 50381630, 100763260, 201526520]

約数ペア:

[(1, 201526520), (2, 100763260), (4, 50381630), (5, 40305304), (8, 25190815), (10, 20152652), (13, 15502040), (20, 10076326), (26, 7751020), (40, 5038163), (52, 3875510), (65, 3100408), (104, 1937755), (130, 1550204), (260, 775102), (520, 387551)]