21215036

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{5519}}^1$

素因数の和:5585

約数の個数: 18

約数和(自身を含む): 38369520

約数和(自身を除く): 17154484

約数列:

[1, 2, 4, 31, 62, 124, 961, 1922, 3844, 5519, 11038, 22076, 171089, 342178, 684356, 5303759, 10607518, 21215036]

約数ペア:

[(1, 21215036), (2, 10607518), (4, 5303759), (31, 684356), (62, 342178), (124, 171089), (961, 22076), (1922, 11038), (3844, 5519)]