20945380

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10369}}^1$

素因数の和:10479

約数の個数: 24

約数和(自身を含む): 44425080

約数和(自身を除く): 23479700

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10369, 20738, 41476, 51845, 103690, 207380, 1047269, 2094538, 4189076, 5236345, 10472690, 20945380]

約数ペア:

[(1, 20945380), (2, 10472690), (4, 5236345), (5, 4189076), (10, 2094538), (20, 1047269), (101, 207380), (202, 103690), (404, 51845), (505, 41476), (1010, 20738), (2020, 10369)]