721857140

素因数分解:

$2^2\times 5^1\times {\mathrm{3011}}^1\times {\mathrm{11987}}^1$

素因数の和:15007

約数の個数: 24

約数和(自身を含む): 1516529952

約数和(自身を除く): 794672812

約数列:

[1, 2, 4, 5, 10, 20, 3011, 6022, 11987, 12044, 15055, 23974, 30110, 47948, 59935, 60220, 119870, 239740, 36092857, 72185714, 144371428, 180464285, 360928570, 721857140]

約数ペア:

[(1, 721857140), (2, 360928570), (4, 180464285), (5, 144371428), (10, 72185714), (20, 36092857), (3011, 239740), (6022, 119870), (11987, 60220), (12044, 59935), (15055, 47948), (23974, 30110)]