80975780

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{22369}}^1$

素因数の和:22559

約数の個数: 24

約数和(自身を含む): 170996280

約数和(自身を除く): 90020500

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 22369, 44738, 89476, 111845, 223690, 447380, 4048789, 8097578, 16195156, 20243945, 40487890, 80975780]

約数ペア:

[(1, 80975780), (2, 40487890), (4, 20243945), (5, 16195156), (10, 8097578), (20, 4048789), (181, 447380), (362, 223690), (724, 111845), (905, 89476), (1810, 44738), (3620, 22369)]