64521260

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{31321}}^1$

素因数の和:31433

約数の個数: 24

約数和(自身を含む): 136814496

約数和(自身を除く): 72293236

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 31321, 62642, 125284, 156605, 313210, 626420, 3226063, 6452126, 12904252, 16130315, 32260630, 64521260]

約数ペア:

[(1, 64521260), (2, 32260630), (4, 16130315), (5, 12904252), (10, 6452126), (20, 3226063), (103, 626420), (206, 313210), (412, 156605), (515, 125284), (1030, 62642), (2060, 31321)]