72878620

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{7159}}^1$

素因数の和:7677

約数の個数: 24

約数和(自身を含む): 153367200

約数和(自身を除く): 80488580

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 7159, 10180, 14318, 28636, 35795, 71590, 143180, 3643931, 7287862, 14575724, 18219655, 36439310, 72878620]

約数ペア:

[(1, 72878620), (2, 36439310), (4, 18219655), (5, 14575724), (10, 7287862), (20, 3643931), (509, 143180), (1018, 71590), (2036, 35795), (2545, 28636), (5090, 14318), (7159, 10180)]