18706220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71947}}^1$

素因数の和:71969

約数の個数: 24

約数和(自身を含む): 42305424

約数和(自身を除く): 23599204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71947, 143894, 287788, 359735, 719470, 935311, 1438940, 1870622, 3741244, 4676555, 9353110, 18706220]

約数ペア:

[(1, 18706220), (2, 9353110), (4, 4676555), (5, 3741244), (10, 1870622), (13, 1438940), (20, 935311), (26, 719470), (52, 359735), (65, 287788), (130, 143894), (260, 71947)]