12487640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{281}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 31065120

約数和(自身を除く): 18577480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 281, 404, 440, 505, 562, 808, 1010, 1111, 1124, 1405, 2020, 2222, 2248, 2810, 3091, 4040, 4444, 5555, 5620, 6182, 8888, 11110, 11240, 12364, 15455, 22220, 24728, 28381, 30910, 44440, 56762, 61820, 113524, 123640, 141905, 227048, 283810, 312191, 567620, 624382, 1135240, 1248764, 1560955, 2497528, 3121910, 6243820, 12487640]

約数ペア:

[(1, 12487640), (2, 6243820), (4, 3121910), (5, 2497528), (8, 1560955), (10, 1248764), (11, 1135240), (20, 624382), (22, 567620), (40, 312191), (44, 283810), (55, 227048), (88, 141905), (101, 123640), (110, 113524), (202, 61820), (220, 56762), (281, 44440), (404, 30910), (440, 28381), (505, 24728), (562, 22220), (808, 15455), (1010, 12364), (1111, 11240), (1124, 11110), (1405, 8888), (2020, 6182), (2222, 5620), (2248, 5555), (2810, 4444), (3091, 4040)]