21502718

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{571}}^1\times {\mathrm{991}}^1$

素因数の和:1583

約数の個数: 16

約数和(自身を含む): 34045440

約数和(自身を除く): 12542722

約数列:

[1, 2, 19, 38, 571, 991, 1142, 1982, 10849, 18829, 21698, 37658, 565861, 1131722, 10751359, 21502718]

約数ペア:

[(1, 21502718), (2, 10751359), (19, 1131722), (38, 565861), (571, 37658), (991, 21698), (1142, 18829), (1982, 10849)]