21476960

素因数分解:

$2^5\times 5^1\times {\mathrm{269}}^1\times {\mathrm{499}}^1$

素因数の和:783

約数の個数: 48

約数和(自身を含む): 51030000

約数和(自身を除く): 29553040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 269, 499, 538, 998, 1076, 1345, 1996, 2152, 2495, 2690, 3992, 4304, 4990, 5380, 7984, 8608, 9980, 10760, 15968, 19960, 21520, 39920, 43040, 79840, 134231, 268462, 536924, 671155, 1073848, 1342310, 2147696, 2684620, 4295392, 5369240, 10738480, 21476960]

約数ペア:

[(1, 21476960), (2, 10738480), (4, 5369240), (5, 4295392), (8, 2684620), (10, 2147696), (16, 1342310), (20, 1073848), (32, 671155), (40, 536924), (80, 268462), (160, 134231), (269, 79840), (499, 43040), (538, 39920), (998, 21520), (1076, 19960), (1345, 15968), (1996, 10760), (2152, 9980), (2495, 8608), (2690, 7984), (3992, 5380), (4304, 4990)]