21080204

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{2053}}^1$

素因数の和:2225

約数の個数: 24

約数和(自身を含む): 39338208

約数和(自身を除く): 18258004

約数列:

[1, 2, 4, 17, 34, 68, 151, 302, 604, 2053, 2567, 4106, 5134, 8212, 10268, 34901, 69802, 139604, 310003, 620006, 1240012, 5270051, 10540102, 21080204]

約数ペア:

[(1, 21080204), (2, 10540102), (4, 5270051), (17, 1240012), (34, 620006), (68, 310003), (151, 139604), (302, 69802), (604, 34901), (2053, 10268), (2567, 8212), (4106, 5134)]