21471580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{307}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 27426500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 269, 307, 538, 614, 1076, 1228, 1345, 1535, 2690, 3070, 3497, 3991, 5380, 6140, 6994, 7982, 13988, 15964, 17485, 19955, 34970, 39910, 69940, 79820, 82583, 165166, 330332, 412915, 825830, 1073579, 1651660, 2147158, 4294316, 5367895, 10735790, 21471580]

約数ペア:

[(1, 21471580), (2, 10735790), (4, 5367895), (5, 4294316), (10, 2147158), (13, 1651660), (20, 1073579), (26, 825830), (52, 412915), (65, 330332), (130, 165166), (260, 82583), (269, 79820), (307, 69940), (538, 39910), (614, 34970), (1076, 19955), (1228, 17485), (1345, 15964), (1535, 13988), (2690, 7982), (3070, 6994), (3497, 6140), (3991, 5380)]