289770620

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{36131}}^1$

素因数の和:36541

約数の個数: 24

約数和(自身を含む): 610052688

約数和(自身を除く): 320282068

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 36131, 72262, 144524, 180655, 361310, 722620, 14488531, 28977062, 57954124, 72442655, 144885310, 289770620]

約数ペア:

[(1, 289770620), (2, 144885310), (4, 72442655), (5, 57954124), (10, 28977062), (20, 14488531), (401, 722620), (802, 361310), (1604, 180655), (2005, 144524), (4010, 72262), (8020, 36131)]