20821020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31547}}^1$

素因数の和:31570

約数の個数: 48

約数和(自身を含む): 63600768

約数和(自身を除く): 42779748

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 31547, 63094, 94641, 126188, 157735, 189282, 315470, 347017, 378564, 473205, 630940, 694034, 946410, 1041051, 1388068, 1735085, 1892820, 2082102, 3470170, 4164204, 5205255, 6940340, 10410510, 20821020]

約数ペア:

[(1, 20821020), (2, 10410510), (3, 6940340), (4, 5205255), (5, 4164204), (6, 3470170), (10, 2082102), (11, 1892820), (12, 1735085), (15, 1388068), (20, 1041051), (22, 946410), (30, 694034), (33, 630940), (44, 473205), (55, 378564), (60, 347017), (66, 315470), (110, 189282), (132, 157735), (165, 126188), (220, 94641), (330, 63094), (660, 31547)]