21256770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{708559}}^1$

素因数の和:708569

約数の個数: 16

約数和(自身を含む): 51016320

約数和(自身を除く): 29759550

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 708559, 1417118, 2125677, 3542795, 4251354, 7085590, 10628385, 21256770]

約数ペア:

[(1, 21256770), (2, 10628385), (3, 7085590), (5, 4251354), (6, 3542795), (10, 2125677), (15, 1417118), (30, 708559)]