128412879

素因数分解:

$3^1\times 7^2\times {\mathrm{683}}^1\times {\mathrm{1279}}^1$

素因数の和:1979

約数の個数: 24

約数和(自身を含む): 199618560

約数和(自身を除く): 71205681

約数列:

[1, 3, 7, 21, 49, 147, 683, 1279, 2049, 3837, 4781, 8953, 14343, 26859, 33467, 62671, 100401, 188013, 873557, 2620671, 6114899, 18344697, 42804293, 128412879]

約数ペア:

[(1, 128412879), (3, 42804293), (7, 18344697), (21, 6114899), (49, 2620671), (147, 873557), (683, 188013), (1279, 100401), (2049, 62671), (3837, 33467), (4781, 26859), (8953, 14343)]