21902620

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2731}}^1$

素因数の和:3141

約数の個数: 24

約数和(自身を含む): 46127088

約数和(自身を除く): 24224468

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 2731, 4010, 5462, 8020, 10924, 13655, 27310, 54620, 1095131, 2190262, 4380524, 5475655, 10951310, 21902620]

約数ペア:

[(1, 21902620), (2, 10951310), (4, 5475655), (5, 4380524), (10, 2190262), (20, 1095131), (401, 54620), (802, 27310), (1604, 13655), (2005, 10924), (2731, 8020), (4010, 5462)]