12855890

素因数分解:

$2^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1987}}^1$

素因数の和:2641

約数の個数: 16

約数和(自身を含む): 23188032

約数和(自身を除く): 10332142

約数列:

[1, 2, 5, 10, 647, 1294, 1987, 3235, 3974, 6470, 9935, 19870, 1285589, 2571178, 6427945, 12855890]

約数ペア:

[(1, 12855890), (2, 6427945), (5, 2571178), (10, 1285589), (647, 19870), (1294, 9935), (1987, 6470), (3235, 3974)]