18785260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72251}}^1$

素因数の和:72273

約数の個数: 24

約数和(自身を含む): 42484176

約数和(自身を除く): 23698916

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72251, 144502, 289004, 361255, 722510, 939263, 1445020, 1878526, 3757052, 4696315, 9392630, 18785260]

約数ペア:

[(1, 18785260), (2, 9392630), (4, 4696315), (5, 3757052), (10, 1878526), (13, 1445020), (20, 939263), (26, 722510), (52, 361255), (65, 289004), (130, 144502), (260, 72251)]