20948780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19763}}^1$

素因数の和:19825

約数の個数: 24

約数和(自身を含む): 44824752

約数和(自身を除く): 23875972

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 19763, 39526, 79052, 98815, 197630, 395260, 1047439, 2094878, 4189756, 5237195, 10474390, 20948780]

約数ペア:

[(1, 20948780), (2, 10474390), (4, 5237195), (5, 4189756), (10, 2094878), (20, 1047439), (53, 395260), (106, 197630), (212, 98815), (265, 79052), (530, 39526), (1060, 19763)]