421551575

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{20639}}^1$

素因数の和:20711

約数の個数: 24

約数和(自身を含む): 563059200

約数和(自身を除く): 141507625

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 1075, 4085, 20425, 20639, 103195, 392141, 515975, 887477, 1960705, 4437385, 9803525, 16862063, 22186925, 84310315, 421551575]

約数ペア:

[(1, 421551575), (5, 84310315), (19, 22186925), (25, 16862063), (43, 9803525), (95, 4437385), (215, 1960705), (475, 887477), (817, 515975), (1075, 392141), (4085, 103195), (20425, 20639)]