21485276

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{14879}}^1$

素因数の和:14921

約数の個数: 18

約数和(自身を含む): 39684960

約数和(自身を除く): 18199684

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 14879, 29758, 59516, 282701, 565402, 1130804, 5371319, 10742638, 21485276]

約数ペア:

[(1, 21485276), (2, 10742638), (4, 5371319), (19, 1130804), (38, 565402), (76, 282701), (361, 59516), (722, 29758), (1444, 14879)]