20420281

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1699}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 24969600

約数和(自身を除く): 4549319

約数列:

[1, 7, 17, 101, 119, 707, 1699, 1717, 11893, 12019, 28883, 171599, 202181, 1201193, 2917183, 20420281]

約数ペア:

[(1, 20420281), (7, 2917183), (17, 1201193), (101, 202181), (119, 171599), (707, 28883), (1699, 12019), (1717, 11893)]