21134620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2803}}^1$

素因数の和:2854

約数の個数: 48

約数和(自身を含む): 49462560

約数和(自身を除く): 28327940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2803, 3770, 5606, 7540, 11212, 14015, 28030, 36439, 56060, 72878, 81287, 145756, 162574, 182195, 325148, 364390, 406435, 728780, 812870, 1056731, 1625740, 2113462, 4226924, 5283655, 10567310, 21134620]

約数ペア:

[(1, 21134620), (2, 10567310), (4, 5283655), (5, 4226924), (10, 2113462), (13, 1625740), (20, 1056731), (26, 812870), (29, 728780), (52, 406435), (58, 364390), (65, 325148), (116, 182195), (130, 162574), (145, 145756), (260, 81287), (290, 72878), (377, 56060), (580, 36439), (754, 28030), (1508, 14015), (1885, 11212), (2803, 7540), (3770, 5606)]