20720876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{487}}^1\times {\mathrm{967}}^1$

素因数の和:1469

約数の個数: 24

約数和(自身を含む): 39680256

約数和(自身を除く): 18959380

約数列:

[1, 2, 4, 11, 22, 44, 487, 967, 974, 1934, 1948, 3868, 5357, 10637, 10714, 21274, 21428, 42548, 470929, 941858, 1883716, 5180219, 10360438, 20720876]

約数ペア:

[(1, 20720876), (2, 10360438), (4, 5180219), (11, 1883716), (22, 941858), (44, 470929), (487, 42548), (967, 21428), (974, 21274), (1934, 10714), (1948, 10637), (3868, 5357)]