81965974

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{20021}}^1$

素因数の和:20135

約数の個数: 16

約数和(自身を含む): 129742560

約数和(自身を除く): 47776586

約数列:

[1, 2, 23, 46, 89, 178, 2047, 4094, 20021, 40042, 460483, 920966, 1781869, 3563738, 40982987, 81965974]

約数ペア:

[(1, 81965974), (2, 40982987), (23, 3563738), (46, 1781869), (89, 920966), (178, 460483), (2047, 40042), (4094, 20021)]