21742020

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13421}}^1$

素因数の和:13442

約数の個数: 60

約数和(自身を含む): 68210604

約数和(自身を除く): 46468584

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 13421, 26842, 40263, 53684, 67105, 80526, 120789, 134210, 161052, 201315, 241578, 268420, 362367, 402630, 483156, 603945, 724734, 805260, 1087101, 1207890, 1449468, 1811835, 2174202, 2415780, 3623670, 4348404, 5435505, 7247340, 10871010, 21742020]

約数ペア:

[(1, 21742020), (2, 10871010), (3, 7247340), (4, 5435505), (5, 4348404), (6, 3623670), (9, 2415780), (10, 2174202), (12, 1811835), (15, 1449468), (18, 1207890), (20, 1087101), (27, 805260), (30, 724734), (36, 603945), (45, 483156), (54, 402630), (60, 362367), (81, 268420), (90, 241578), (108, 201315), (135, 161052), (162, 134210), (180, 120789), (270, 80526), (324, 67105), (405, 53684), (540, 40263), (810, 26842), (1620, 13421)]