19828081

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1999}}^1$

素因数の和:2128

約数の個数: 16

約数和(自身を含む): 24640000

約数和(自身を除く): 4811919

約数列:

[1, 7, 13, 91, 109, 763, 1417, 1999, 9919, 13993, 25987, 181909, 217891, 1525237, 2832583, 19828081]

約数ペア:

[(1, 19828081), (7, 2832583), (13, 1525237), (91, 217891), (109, 181909), (763, 25987), (1417, 13993), (1999, 9919)]