72420460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{517289}}^1$

素因数の和:517305

約数の個数: 24

約数和(自身を含む): 173809440

約数和(自身を除く): 101388980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 517289, 1034578, 2069156, 2586445, 3621023, 5172890, 7242046, 10345780, 14484092, 18105115, 36210230, 72420460]

約数ペア:

[(1, 72420460), (2, 36210230), (4, 18105115), (5, 14484092), (7, 10345780), (10, 7242046), (14, 5172890), (20, 3621023), (28, 2586445), (35, 2069156), (70, 1034578), (140, 517289)]