21813688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1531}}^1$

素因数の和:1687

約数の個数: 32

約数和(自身を含む): 44397360

約数和(自身を除く): 22583672

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 137, 274, 548, 1096, 1531, 1781, 3062, 3562, 6124, 7124, 12248, 14248, 19903, 39806, 79612, 159224, 209747, 419494, 838988, 1677976, 2726711, 5453422, 10906844, 21813688]

約数ペア:

[(1, 21813688), (2, 10906844), (4, 5453422), (8, 2726711), (13, 1677976), (26, 838988), (52, 419494), (104, 209747), (137, 159224), (274, 79612), (548, 39806), (1096, 19903), (1531, 14248), (1781, 12248), (3062, 7124), (3562, 6124)]