21851816

素因数分解:

$2^3\times 7^1\times {\mathrm{390211}}^1$

素因数の和:390224

約数の個数: 16

約数和(自身を含む): 46825440

約数和(自身を除く): 24973624

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 390211, 780422, 1560844, 2731477, 3121688, 5462954, 10925908, 21851816]

約数ペア:

[(1, 21851816), (2, 10925908), (4, 5462954), (7, 3121688), (8, 2731477), (14, 1560844), (28, 780422), (56, 390211)]