21672980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{154807}}^1$

素因数の和:154823

約数の個数: 24

約数和(自身を含む): 52015488

約数和(自身を除く): 30342508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 154807, 309614, 619228, 774035, 1083649, 1548070, 2167298, 3096140, 4334596, 5418245, 10836490, 21672980]

約数ペア:

[(1, 21672980), (2, 10836490), (4, 5418245), (5, 4334596), (7, 3096140), (10, 2167298), (14, 1548070), (20, 1083649), (28, 774035), (35, 619228), (70, 309614), (140, 154807)]