21909140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1879}}^1$

素因数の和:1952

約数の個数: 48

約数和(自身を含む): 51166080

約数和(自身を除く): 29256940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1879, 2332, 2915, 3758, 5830, 7516, 9395, 11660, 18790, 20669, 37580, 41338, 82676, 99587, 103345, 199174, 206690, 398348, 413380, 497935, 995870, 1095457, 1991740, 2190914, 4381828, 5477285, 10954570, 21909140]

約数ペア:

[(1, 21909140), (2, 10954570), (4, 5477285), (5, 4381828), (10, 2190914), (11, 1991740), (20, 1095457), (22, 995870), (44, 497935), (53, 413380), (55, 398348), (106, 206690), (110, 199174), (212, 103345), (220, 99587), (265, 82676), (530, 41338), (583, 37580), (1060, 20669), (1166, 18790), (1879, 11660), (2332, 9395), (2915, 7516), (3758, 5830)]