20201407821

素因数分解:

$3^2\times 7^2\times {\mathrm{45808181}}^1$

素因数の和:45808201

約数の個数: 18

約数和(自身を含む): 33943862862

約数和(自身を除く): 13742455041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45808181, 137424543, 320657267, 412273629, 961971801, 2244600869, 2885915403, 6733802607, 20201407821]

約数ペア:

[(1, 20201407821), (3, 6733802607), (7, 2885915403), (9, 2244600869), (21, 961971801), (49, 412273629), (63, 320657267), (147, 137424543), (441, 45808181)]