21001110

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53849}}^1$

素因数の和:53872

約数の個数: 32

約数和(自身を含む): 54280800

約数和(自身を除く): 33279690

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53849, 107698, 161547, 269245, 323094, 538490, 700037, 807735, 1400074, 1615470, 2100111, 3500185, 4200222, 7000370, 10500555, 21001110]

約数ペア:

[(1, 21001110), (2, 10500555), (3, 7000370), (5, 4200222), (6, 3500185), (10, 2100111), (13, 1615470), (15, 1400074), (26, 807735), (30, 700037), (39, 538490), (65, 323094), (78, 269245), (130, 161547), (195, 107698), (390, 53849)]