21645556

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4751}}^1$

素因数の和:4839

約数の個数: 24

約数和(自身を含む): 40715136

約数和(自身を除く): 19069580

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4751, 9502, 19004, 80767, 161534, 318317, 323068, 636634, 1273268, 5411389, 10822778, 21645556]

約数ペア:

[(1, 21645556), (2, 10822778), (4, 5411389), (17, 1273268), (34, 636634), (67, 323068), (68, 318317), (134, 161534), (268, 80767), (1139, 19004), (2278, 9502), (4556, 4751)]