20921494

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{4507}}^1$

素因数の和:4731

約数の個数: 16

約数和(自身を含む): 34405056

約数和(自身を除く): 13483562

約数列:

[1, 2, 11, 22, 211, 422, 2321, 4507, 4642, 9014, 49577, 99154, 950977, 1901954, 10460747, 20921494]

約数ペア:

[(1, 20921494), (2, 10460747), (11, 1901954), (22, 950977), (211, 99154), (422, 49577), (2321, 9014), (4507, 4642)]