21156874

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^2$

素因数の和:282

約数の個数: 24

約数和(自身を含む): 34494444

約数和(自身を除く): 13337570

約数列:

[1, 2, 17, 34, 61, 101, 122, 202, 1037, 1717, 2074, 3434, 6161, 10201, 12322, 20402, 104737, 173417, 209474, 346834, 622261, 1244522, 10578437, 21156874]

約数ペア:

[(1, 21156874), (2, 10578437), (17, 1244522), (34, 622261), (61, 346834), (101, 209474), (122, 173417), (202, 104737), (1037, 20402), (1717, 12322), (2074, 10201), (3434, 6161)]