21965554

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 36699264

約数和(自身を除く): 14733710

約数列:

[1, 2, 13, 26, 71, 73, 142, 146, 163, 326, 923, 949, 1846, 1898, 2119, 4238, 5183, 10366, 11573, 11899, 23146, 23798, 67379, 134758, 150449, 154687, 300898, 309374, 844829, 1689658, 10982777, 21965554]

約数ペア:

[(1, 21965554), (2, 10982777), (13, 1689658), (26, 844829), (71, 309374), (73, 300898), (142, 154687), (146, 150449), (163, 134758), (326, 67379), (923, 23798), (949, 23146), (1846, 11899), (1898, 11573), (2119, 10366), (4238, 5183)]