64544840

素因数分解:

$2^3\times 5^1\times {\mathrm{1613621}}^1$

素因数の和:1613632

約数の個数: 16

約数和(自身を含む): 145225980

約数和(自身を除く): 80681140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1613621, 3227242, 6454484, 8068105, 12908968, 16136210, 32272420, 64544840]

約数ペア:

[(1, 64544840), (2, 32272420), (4, 16136210), (5, 12908968), (8, 8068105), (10, 6454484), (20, 3227242), (40, 1613621)]