64243640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22621}}^1$

素因数の和:22703

約数の個数: 32

約数和(自身を含む): 146590560

約数和(自身を除く): 82346920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 22621, 45242, 90484, 113105, 180968, 226210, 452420, 904840, 1606091, 3212182, 6424364, 8030455, 12848728, 16060910, 32121820, 64243640]

約数ペア:

[(1, 64243640), (2, 32121820), (4, 16060910), (5, 12848728), (8, 8030455), (10, 6424364), (20, 3212182), (40, 1606091), (71, 904840), (142, 452420), (284, 226210), (355, 180968), (568, 113105), (710, 90484), (1420, 45242), (2840, 22621)]