20448945

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 39124800

約数和(自身を除く): 18675855

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 109, 165, 327, 379, 495, 545, 981, 1137, 1199, 1635, 1895, 3411, 3597, 4169, 4905, 5685, 5995, 10791, 12507, 17055, 17985, 20845, 37521, 41311, 53955, 62535, 123933, 187605, 206555, 371799, 454421, 619665, 1363263, 1858995, 2272105, 4089789, 6816315, 20448945]

約数ペア:

[(1, 20448945), (3, 6816315), (5, 4089789), (9, 2272105), (11, 1858995), (15, 1363263), (33, 619665), (45, 454421), (55, 371799), (99, 206555), (109, 187605), (165, 123933), (327, 62535), (379, 53955), (495, 41311), (545, 37521), (981, 20845), (1137, 17985), (1199, 17055), (1635, 12507), (1895, 10791), (3411, 5995), (3597, 5685), (4169, 4905)]