21820578

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{279751}}^1$

素因数の和:279769

約数の個数: 16

約数和(自身を含む): 46998336

約数和(自身を除く): 25177758

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 279751, 559502, 839253, 1678506, 3636763, 7273526, 10910289, 21820578]

約数ペア:

[(1, 21820578), (2, 10910289), (3, 7273526), (6, 3636763), (13, 1678506), (26, 839253), (39, 559502), (78, 279751)]