21506271

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{1229}}^1$

素因数の和:1558

約数の個数: 16

約数和(自身を含む): 30307200

約数和(自身を除く): 8800929

約数列:

[1, 3, 19, 57, 307, 921, 1229, 3687, 5833, 17499, 23351, 70053, 377303, 1131909, 7168757, 21506271]

約数ペア:

[(1, 21506271), (3, 7168757), (19, 1131909), (57, 377303), (307, 70053), (921, 23351), (1229, 17499), (3687, 5833)]