21047620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{3299}}^1$

素因数の和:3348

約数の個数: 48

約数和(自身を含む): 49896000

約数和(自身を除く): 28848380

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, 3299, 6380, 6598, 13196, 16495, 32990, 36289, 65980, 72578, 95671, 145156, 181445, 191342, 362890, 382684, 478355, 725780, 956710, 1052381, 1913420, 2104762, 4209524, 5261905, 10523810, 21047620]

約数ペア:

[(1, 21047620), (2, 10523810), (4, 5261905), (5, 4209524), (10, 2104762), (11, 1913420), (20, 1052381), (22, 956710), (29, 725780), (44, 478355), (55, 382684), (58, 362890), (110, 191342), (116, 181445), (145, 145156), (220, 95671), (290, 72578), (319, 65980), (580, 36289), (638, 32990), (1276, 16495), (1595, 13196), (3190, 6598), (3299, 6380)]