17287820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{439}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 22628980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 220, 358, 439, 716, 878, 895, 1756, 1790, 1969, 2195, 3580, 3938, 4390, 4829, 7876, 8780, 9658, 9845, 19316, 19690, 24145, 39380, 48290, 78581, 96580, 157162, 314324, 392905, 785810, 864391, 1571620, 1728782, 3457564, 4321955, 8643910, 17287820]

約数ペア:

[(1, 17287820), (2, 8643910), (4, 4321955), (5, 3457564), (10, 1728782), (11, 1571620), (20, 864391), (22, 785810), (44, 392905), (55, 314324), (110, 157162), (179, 96580), (220, 78581), (358, 48290), (439, 39380), (716, 24145), (878, 19690), (895, 19316), (1756, 9845), (1790, 9658), (1969, 8780), (2195, 7876), (3580, 4829), (3938, 4390)]