2638890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 6949800

約数和(自身を除く): 4310910

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 109, 218, 269, 327, 538, 545, 654, 807, 981, 1090, 1345, 1614, 1635, 1962, 2421, 2690, 3270, 4035, 4842, 4905, 8070, 9810, 12105, 24210, 29321, 58642, 87963, 146605, 175926, 263889, 293210, 439815, 527778, 879630, 1319445, 2638890]

約数ペア:

[(1, 2638890), (2, 1319445), (3, 879630), (5, 527778), (6, 439815), (9, 293210), (10, 263889), (15, 175926), (18, 146605), (30, 87963), (45, 58642), (90, 29321), (109, 24210), (218, 12105), (269, 9810), (327, 8070), (538, 4905), (545, 4842), (654, 4035), (807, 3270), (981, 2690), (1090, 2421), (1345, 1962), (1614, 1635)]