80903380

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{22349}}^1$

素因数の和:22539

約数の個数: 24

約数和(自身を含む): 170843400

約数和(自身を除く): 89940020

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 22349, 44698, 89396, 111745, 223490, 446980, 4045169, 8090338, 16180676, 20225845, 40451690, 80903380]

約数ペア:

[(1, 80903380), (2, 40451690), (4, 20225845), (5, 16180676), (10, 8090338), (20, 4045169), (181, 446980), (362, 223490), (724, 111745), (905, 89396), (1810, 44698), (3620, 22349)]