21791690

素因数分解:

$2^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{8101}}^1$

素因数の和:8377

約数の個数: 16

約数和(自身を含む): 39375720

約数和(自身を除く): 17584030

約数列:

[1, 2, 5, 10, 269, 538, 1345, 2690, 8101, 16202, 40505, 81010, 2179169, 4358338, 10895845, 21791690]

約数ペア:

[(1, 21791690), (2, 10895845), (5, 4358338), (10, 2179169), (269, 81010), (538, 40505), (1345, 16202), (2690, 8101)]