72977420

素因数分解:

$2^2\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{2251}}^1$

素因数の和:3881

約数の個数: 24

約数和(自身を含む): 153415248

約数和(自身を除く): 80437828

約数列:

[1, 2, 4, 5, 10, 20, 1621, 2251, 3242, 4502, 6484, 8105, 9004, 11255, 16210, 22510, 32420, 45020, 3648871, 7297742, 14595484, 18244355, 36488710, 72977420]

約数ペア:

[(1, 72977420), (2, 36488710), (4, 18244355), (5, 14595484), (10, 7297742), (20, 3648871), (1621, 45020), (2251, 32420), (3242, 22510), (4502, 16210), (6484, 11255), (8105, 9004)]