21003688

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49537}}^1$

素因数の和:49596

約数の個数: 16

約数和(自身を含む): 40125780

約数和(自身を除く): 19122092

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49537, 99074, 198148, 396296, 2625461, 5250922, 10501844, 21003688]

約数ペア:

[(1, 21003688), (2, 10501844), (4, 5250922), (8, 2625461), (53, 396296), (106, 198148), (212, 99074), (424, 49537)]