64612840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22751}}^1$

素因数の和:22833

約数の個数: 32

約数和(自身を含む): 147432960

約数和(自身を除く): 82820120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 22751, 45502, 91004, 113755, 182008, 227510, 455020, 910040, 1615321, 3230642, 6461284, 8076605, 12922568, 16153210, 32306420, 64612840]

約数ペア:

[(1, 64612840), (2, 32306420), (4, 16153210), (5, 12922568), (8, 8076605), (10, 6461284), (20, 3230642), (40, 1615321), (71, 910040), (142, 455020), (284, 227510), (355, 182008), (568, 113755), (710, 91004), (1420, 45502), (2840, 22751)]