21508876

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4721}}^1$

素因数の和:4809

約数の個数: 24

約数和(自身を含む): 40458096

約数和(自身を除く): 18949220

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4721, 9442, 18884, 80257, 160514, 316307, 321028, 632614, 1265228, 5377219, 10754438, 21508876]

約数ペア:

[(1, 21508876), (2, 10754438), (4, 5377219), (17, 1265228), (34, 632614), (67, 321028), (68, 316307), (134, 160514), (268, 80257), (1139, 18884), (2278, 9442), (4556, 4721)]