72465320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42131}}^1$

素因数の和:42185

約数の個数: 32

約数和(自身を含む): 166842720

約数和(自身を除く): 94377400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 42131, 84262, 168524, 210655, 337048, 421310, 842620, 1685240, 1811633, 3623266, 7246532, 9058165, 14493064, 18116330, 36232660, 72465320]

約数ペア:

[(1, 72465320), (2, 36232660), (4, 18116330), (5, 14493064), (8, 9058165), (10, 7246532), (20, 3623266), (40, 1811633), (43, 1685240), (86, 842620), (172, 421310), (215, 337048), (344, 210655), (430, 168524), (860, 84262), (1720, 42131)]