21706545

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3389}}^1$

素因数の和:3465

約数の個数: 32

約数和(自身を含む): 40354560

約数和(自身を除く): 18648015

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3389, 6405, 10167, 16945, 23723, 50835, 71169, 118615, 206729, 355845, 620187, 1033645, 1447103, 3100935, 4341309, 7235515, 21706545]

約数ペア:

[(1, 21706545), (3, 7235515), (5, 4341309), (7, 3100935), (15, 1447103), (21, 1033645), (35, 620187), (61, 355845), (105, 206729), (183, 118615), (305, 71169), (427, 50835), (915, 23723), (1281, 16945), (2135, 10167), (3389, 6405)]