21799580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99089}}^1$

素因数の和:99109

約数の個数: 24

約数和(自身を含む): 49941360

約数和(自身を除く): 28141780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99089, 198178, 396356, 495445, 990890, 1089979, 1981780, 2179958, 4359916, 5449895, 10899790, 21799580]

約数ペア:

[(1, 21799580), (2, 10899790), (4, 5449895), (5, 4359916), (10, 2179958), (11, 1981780), (20, 1089979), (22, 990890), (44, 495445), (55, 396356), (110, 198178), (220, 99089)]