12758680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{271}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 31726080

約数和(自身を除く): 18967400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 107, 110, 214, 220, 271, 428, 440, 535, 542, 856, 1070, 1084, 1177, 1355, 2140, 2168, 2354, 2710, 2981, 4280, 4708, 5420, 5885, 5962, 9416, 10840, 11770, 11924, 14905, 23540, 23848, 28997, 29810, 47080, 57994, 59620, 115988, 119240, 144985, 231976, 289970, 318967, 579940, 637934, 1159880, 1275868, 1594835, 2551736, 3189670, 6379340, 12758680]

約数ペア:

[(1, 12758680), (2, 6379340), (4, 3189670), (5, 2551736), (8, 1594835), (10, 1275868), (11, 1159880), (20, 637934), (22, 579940), (40, 318967), (44, 289970), (55, 231976), (88, 144985), (107, 119240), (110, 115988), (214, 59620), (220, 57994), (271, 47080), (428, 29810), (440, 28997), (535, 23848), (542, 23540), (856, 14905), (1070, 11924), (1084, 11770), (1177, 10840), (1355, 9416), (2140, 5962), (2168, 5885), (2354, 5420), (2710, 4708), (2981, 4280)]