64643725

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{461}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 82494720

約数和(自身を除く): 17850995

約数列:

[1, 5, 25, 71, 79, 355, 395, 461, 1775, 1975, 2305, 5609, 11525, 28045, 32731, 36419, 140225, 163655, 182095, 818275, 910475, 2585749, 12928745, 64643725]

約数ペア:

[(1, 64643725), (5, 12928745), (25, 2585749), (71, 910475), (79, 818275), (355, 182095), (395, 163655), (461, 140225), (1775, 36419), (1975, 32731), (2305, 28045), (5609, 11525)]