27881245

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3671}}^1$

素因数の和:3721

約数の個数: 24

約数和(自身を含む): 40186368

約数和(自身を除く): 12305123

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 3671, 7595, 18355, 25697, 113801, 128485, 179879, 569005, 796607, 899395, 3983035, 5576249, 27881245]

約数ペア:

[(1, 27881245), (5, 5576249), (7, 3983035), (31, 899395), (35, 796607), (49, 569005), (155, 179879), (217, 128485), (245, 113801), (1085, 25697), (1519, 18355), (3671, 7595)]