18393925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{317}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 25078752

約数和(自身を除く): 6684827

約数列:

[1, 5, 11, 25, 55, 211, 275, 317, 1055, 1585, 2321, 3487, 5275, 7925, 11605, 17435, 58025, 66887, 87175, 334435, 735757, 1672175, 3678785, 18393925]

約数ペア:

[(1, 18393925), (5, 3678785), (11, 1672175), (25, 735757), (55, 334435), (211, 87175), (275, 66887), (317, 58025), (1055, 17435), (1585, 11605), (2321, 7925), (3487, 5275)]