20754140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{3253}}^1$

素因数の和:3302

約数の個数: 48

約数和(自身を含む): 49200480

約数和(自身を除く): 28446340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 3190, 3253, 6380, 6506, 13012, 16265, 32530, 35783, 65060, 71566, 94337, 143132, 178915, 188674, 357830, 377348, 471685, 715660, 943370, 1037707, 1886740, 2075414, 4150828, 5188535, 10377070, 20754140]

約数ペア:

[(1, 20754140), (2, 10377070), (4, 5188535), (5, 4150828), (10, 2075414), (11, 1886740), (20, 1037707), (22, 943370), (29, 715660), (44, 471685), (55, 377348), (58, 357830), (110, 188674), (116, 178915), (145, 143132), (220, 94337), (290, 71566), (319, 65060), (580, 35783), (638, 32530), (1276, 16265), (1595, 13012), (3190, 6506), (3253, 6380)]