72784840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{44381}}^1$

素因数の和:44433

約数の個数: 32

約数和(自身を含む): 167763960

約数和(自身を除く): 94979120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 44381, 88762, 177524, 221905, 355048, 443810, 887620, 1775240, 1819621, 3639242, 7278484, 9098105, 14556968, 18196210, 36392420, 72784840]

約数ペア:

[(1, 72784840), (2, 36392420), (4, 18196210), (5, 14556968), (8, 9098105), (10, 7278484), (20, 3639242), (40, 1819621), (41, 1775240), (82, 887620), (164, 443810), (205, 355048), (328, 221905), (410, 177524), (820, 88762), (1640, 44381)]