12728720

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1487}}^1$

素因数の和:1607

約数の個数: 40

約数和(自身を含む): 29890944

約数和(自身を除く): 17162224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1487, 1712, 2140, 2974, 4280, 5948, 7435, 8560, 11896, 14870, 23792, 29740, 59480, 118960, 159109, 318218, 636436, 795545, 1272872, 1591090, 2545744, 3182180, 6364360, 12728720]

約数ペア:

[(1, 12728720), (2, 6364360), (4, 3182180), (5, 2545744), (8, 1591090), (10, 1272872), (16, 795545), (20, 636436), (40, 318218), (80, 159109), (107, 118960), (214, 59480), (428, 29740), (535, 23792), (856, 14870), (1070, 11896), (1487, 8560), (1712, 7435), (2140, 5948), (2974, 4280)]