72445540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{84239}}^1$

素因数の和:84291

約数の個数: 24

約数和(自身を含む): 155675520

約数和(自身を除く): 83229980

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 84239, 168478, 336956, 421195, 842390, 1684780, 3622277, 7244554, 14489108, 18111385, 36222770, 72445540]

約数ペア:

[(1, 72445540), (2, 36222770), (4, 18111385), (5, 14489108), (10, 7244554), (20, 3622277), (43, 1684780), (86, 842390), (172, 421195), (215, 336956), (430, 168478), (860, 84239)]