21599240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{569}}^1$

素因数の和:666

約数の個数: 64

約数和(自身を含む): 53146800

約数和(自身を除く): 31547560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 260, 292, 365, 520, 569, 584, 730, 949, 1138, 1460, 1898, 2276, 2845, 2920, 3796, 4552, 4745, 5690, 7397, 7592, 9490, 11380, 14794, 18980, 22760, 29588, 36985, 37960, 41537, 59176, 73970, 83074, 147940, 166148, 207685, 295880, 332296, 415370, 539981, 830740, 1079962, 1661480, 2159924, 2699905, 4319848, 5399810, 10799620, 21599240]

約数ペア:

[(1, 21599240), (2, 10799620), (4, 5399810), (5, 4319848), (8, 2699905), (10, 2159924), (13, 1661480), (20, 1079962), (26, 830740), (40, 539981), (52, 415370), (65, 332296), (73, 295880), (104, 207685), (130, 166148), (146, 147940), (260, 83074), (292, 73970), (365, 59176), (520, 41537), (569, 37960), (584, 36985), (730, 29588), (949, 22760), (1138, 18980), (1460, 14794), (1898, 11380), (2276, 9490), (2845, 7592), (2920, 7397), (3796, 5690), (4552, 4745)]