81521390

素因数分解:

$2^1\times 5^1\times {\mathrm{293}}^1\times {\mathrm{27823}}^1$

素因数の和:28123

約数の個数: 16

約数和(自身を含む): 147244608

約数和(自身を除く): 65723218

約数列:

[1, 2, 5, 10, 293, 586, 1465, 2930, 27823, 55646, 139115, 278230, 8152139, 16304278, 40760695, 81521390]

約数ペア:

[(1, 81521390), (2, 40760695), (5, 16304278), (10, 8152139), (293, 278230), (586, 139115), (1465, 55646), (2930, 27823)]