20997788

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1423}}^1$

素因数の和:1482

約数の個数: 48

約数和(自身を含む): 45932544

約数和(自身を除く): 24934756

約数列:

[1, 2, 4, 7, 14, 17, 28, 31, 34, 62, 68, 119, 124, 217, 238, 434, 476, 527, 868, 1054, 1423, 2108, 2846, 3689, 5692, 7378, 9961, 14756, 19922, 24191, 39844, 44113, 48382, 88226, 96764, 169337, 176452, 308791, 338674, 617582, 677348, 749921, 1235164, 1499842, 2999684, 5249447, 10498894, 20997788]

約数ペア:

[(1, 20997788), (2, 10498894), (4, 5249447), (7, 2999684), (14, 1499842), (17, 1235164), (28, 749921), (31, 677348), (34, 617582), (62, 338674), (68, 308791), (119, 176452), (124, 169337), (217, 96764), (238, 88226), (434, 48382), (476, 44113), (527, 39844), (868, 24191), (1054, 19922), (1423, 14756), (2108, 9961), (2846, 7378), (3689, 5692)]