21115270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{10103}}^1$

素因数の和:10140

約数の個数: 32

約数和(自身を含む): 43649280

約数和(自身を除く): 22534010

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 10103, 20206, 50515, 101030, 111133, 191957, 222266, 383914, 555665, 959785, 1111330, 1919570, 2111527, 4223054, 10557635, 21115270]

約数ペア:

[(1, 21115270), (2, 10557635), (5, 4223054), (10, 2111527), (11, 1919570), (19, 1111330), (22, 959785), (38, 555665), (55, 383914), (95, 222266), (110, 191957), (190, 111133), (209, 101030), (418, 50515), (1045, 20206), (2090, 10103)]