64732840

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{8941}}^1$

素因数の和:9133

約数の個数: 32

約数和(自身を含む): 146469960

約数和(自身を除く): 81737120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 8941, 17882, 35764, 44705, 71528, 89410, 178820, 357640, 1618321, 3236642, 6473284, 8091605, 12946568, 16183210, 32366420, 64732840]

約数ペア:

[(1, 64732840), (2, 32366420), (4, 16183210), (5, 12946568), (8, 8091605), (10, 6473284), (20, 3236642), (40, 1618321), (181, 357640), (362, 178820), (724, 89410), (905, 71528), (1448, 44705), (1810, 35764), (3620, 17882), (7240, 8941)]