6720987

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3517}}^1$

素因数の和:3547

約数の個数: 24

約数和(自身を含む): 11229456

約数和(自身を除く): 4508469

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 3517, 10551, 24619, 45721, 73857, 137163, 172333, 320047, 516999, 960141, 2240329, 6720987]

約数ペア:

[(1, 6720987), (3, 2240329), (7, 960141), (13, 516999), (21, 320047), (39, 172333), (49, 137163), (91, 73857), (147, 45721), (273, 24619), (637, 10551), (1911, 3517)]