21296505

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61729}}^1$

素因数の和:61760

約数の個数: 16

約数和(自身を含む): 35556480

約数和(自身を除く): 14259975

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61729, 185187, 308645, 925935, 1419767, 4259301, 7098835, 21296505]

約数ペア:

[(1, 21296505), (3, 7098835), (5, 4259301), (15, 1419767), (23, 925935), (69, 308645), (115, 185187), (345, 61729)]