280940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1277}}^1$

素因数の和:1297

約数の個数: 24

約数和(自身を含む): 644112

約数和(自身を除く): 363172

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1277, 2554, 5108, 6385, 12770, 14047, 25540, 28094, 56188, 70235, 140470, 280940]

約数ペア:

[(1, 280940), (2, 140470), (4, 70235), (5, 56188), (10, 28094), (11, 25540), (20, 14047), (22, 12770), (44, 6385), (55, 5108), (110, 2554), (220, 1277)]