21707660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2879}}^1$

素因数の和:2930

約数の個数: 48

約数和(自身を含む): 50803200

約数和(自身を除く): 29095540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2879, 3770, 5758, 7540, 11516, 14395, 28790, 37427, 57580, 74854, 83491, 149708, 166982, 187135, 333964, 374270, 417455, 748540, 834910, 1085383, 1669820, 2170766, 4341532, 5426915, 10853830, 21707660]

約数ペア:

[(1, 21707660), (2, 10853830), (4, 5426915), (5, 4341532), (10, 2170766), (13, 1669820), (20, 1085383), (26, 834910), (29, 748540), (52, 417455), (58, 374270), (65, 333964), (116, 187135), (130, 166982), (145, 149708), (260, 83491), (290, 74854), (377, 57580), (580, 37427), (754, 28790), (1508, 14395), (1885, 11516), (2879, 7540), (3770, 5758)]