28641020

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{3989}}^1$

素因数の和:4357

約数の個数: 24

約数和(自身を含む): 60328800

約数和(自身を除く): 31687780

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 3590, 3989, 7180, 7978, 15956, 19945, 39890, 79780, 1432051, 2864102, 5728204, 7160255, 14320510, 28641020]

約数ペア:

[(1, 28641020), (2, 14320510), (4, 7160255), (5, 5728204), (10, 2864102), (20, 1432051), (359, 79780), (718, 39890), (1436, 19945), (1795, 15956), (3590, 7978), (3989, 7180)]