20898661

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2879}}^1$

素因数の和:2964

約数の個数: 16

約数和(自身を含む): 25712640

約数和(自身を除く): 4813979

約数列:

[1, 7, 17, 61, 119, 427, 1037, 2879, 7259, 20153, 48943, 175619, 342601, 1229333, 2985523, 20898661]

約数ペア:

[(1, 20898661), (7, 2985523), (17, 1229333), (61, 342601), (119, 175619), (427, 48943), (1037, 20153), (2879, 7259)]