20780936

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{479}}^1$

素因数の和:542

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 25875064

約数列:

[1, 2, 4, 8, 11, 17, 22, 29, 34, 44, 58, 68, 88, 116, 136, 187, 232, 319, 374, 479, 493, 638, 748, 958, 986, 1276, 1496, 1916, 1972, 2552, 3832, 3944, 5269, 5423, 8143, 10538, 10846, 13891, 16286, 21076, 21692, 27782, 32572, 42152, 43384, 55564, 65144, 89573, 111128, 152801, 179146, 236147, 305602, 358292, 472294, 611204, 716584, 944588, 1222408, 1889176, 2597617, 5195234, 10390468, 20780936]

約数ペア:

[(1, 20780936), (2, 10390468), (4, 5195234), (8, 2597617), (11, 1889176), (17, 1222408), (22, 944588), (29, 716584), (34, 611204), (44, 472294), (58, 358292), (68, 305602), (88, 236147), (116, 179146), (136, 152801), (187, 111128), (232, 89573), (319, 65144), (374, 55564), (479, 43384), (493, 42152), (638, 32572), (748, 27782), (958, 21692), (986, 21076), (1276, 16286), (1496, 13891), (1916, 10846), (1972, 10538), (2552, 8143), (3832, 5423), (3944, 5269)]