71857160

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{16481}}^1$

素因数の和:16601

約数の個数: 32

約数和(自身を含む): 163171800

約数和(自身を除く): 91314640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 16481, 32962, 65924, 82405, 131848, 164810, 329620, 659240, 1796429, 3592858, 7185716, 8982145, 14371432, 17964290, 35928580, 71857160]

約数ペア:

[(1, 71857160), (2, 35928580), (4, 17964290), (5, 14371432), (8, 8982145), (10, 7185716), (20, 3592858), (40, 1796429), (109, 659240), (218, 329620), (436, 164810), (545, 131848), (872, 82405), (1090, 65924), (2180, 32962), (4360, 16481)]