81157964

素因数分解:

$2^2\times {\mathrm{79}}^2\times {\mathrm{3251}}^1$

素因数の和:3413

約数の個数: 18

約数和(自身を含む): 143891244

約数和(自身を除く): 62733280

約数列:

[1, 2, 4, 79, 158, 316, 3251, 6241, 6502, 12482, 13004, 24964, 256829, 513658, 1027316, 20289491, 40578982, 81157964]

約数ペア:

[(1, 81157964), (2, 40578982), (4, 20289491), (79, 1027316), (158, 513658), (316, 256829), (3251, 24964), (6241, 13004), (6502, 12482)]