21902540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{3433}}^1$

素因数の和:3482

約数の個数: 48

約数和(自身を含む): 51922080

約数和(自身を除く): 30019540

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, 3433, 6380, 6866, 13732, 17165, 34330, 37763, 68660, 75526, 99557, 151052, 188815, 199114, 377630, 398228, 497785, 755260, 995570, 1095127, 1991140, 2190254, 4380508, 5475635, 10951270, 21902540]

約数ペア:

[(1, 21902540), (2, 10951270), (4, 5475635), (5, 4380508), (10, 2190254), (11, 1991140), (20, 1095127), (22, 995570), (29, 755260), (44, 497785), (55, 398228), (58, 377630), (110, 199114), (116, 188815), (145, 151052), (220, 99557), (290, 75526), (319, 68660), (580, 37763), (638, 34330), (1276, 17165), (1595, 13732), (3190, 6866), (3433, 6380)]