21319540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96907}}^1$

素因数の和:96927

約数の個数: 24

約数和(自身を含む): 48841632

約数和(自身を除く): 27522092

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96907, 193814, 387628, 484535, 969070, 1065977, 1938140, 2131954, 4263908, 5329885, 10659770, 21319540]

約数ペア:

[(1, 21319540), (2, 10659770), (4, 5329885), (5, 4263908), (10, 2131954), (11, 1938140), (20, 1065977), (22, 969070), (44, 484535), (55, 387628), (110, 193814), (220, 96907)]