21971772

素因数分解:

$2^2\times 3^2\times {\mathrm{610327}}^1$

素因数の和:610337

約数の個数: 18

約数和(自身を含む): 55539848

約数和(自身を除く): 33568076

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 610327, 1220654, 1830981, 2441308, 3661962, 5492943, 7323924, 10985886, 21971772]

約数ペア:

[(1, 21971772), (2, 10985886), (3, 7323924), (4, 5492943), (6, 3661962), (9, 2441308), (12, 1830981), (18, 1220654), (36, 610327)]