18381489

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{577}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 29519616

約数和(自身を除く): 11138127

約数列:

[1, 3, 7, 21, 37, 41, 111, 123, 259, 287, 577, 777, 861, 1517, 1731, 4039, 4551, 10619, 12117, 21349, 23657, 31857, 64047, 70971, 149443, 165599, 448329, 496797, 875309, 2625927, 6127163, 18381489]

約数ペア:

[(1, 18381489), (3, 6127163), (7, 2625927), (21, 875309), (37, 496797), (41, 448329), (111, 165599), (123, 149443), (259, 70971), (287, 64047), (577, 31857), (777, 23657), (861, 21349), (1517, 12117), (1731, 10619), (4039, 4551)]