68990870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{40823}}^1$

素因数の和:40856

約数の個数: 24

約数和(自身を含む): 134474256

約数和(自身を除く): 65483386

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 40823, 81646, 204115, 408230, 530699, 1061398, 2653495, 5306990, 6899087, 13798174, 34495435, 68990870]

約数ペア:

[(1, 68990870), (2, 34495435), (5, 13798174), (10, 6899087), (13, 5306990), (26, 2653495), (65, 1061398), (130, 530699), (169, 408230), (338, 204115), (845, 81646), (1690, 40823)]