18902331

素因数分解:

$3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1987}}^1$

素因数の和:2151

約数の個数: 24

約数和(自身を含む): 31426304

約数和(自身を除く): 12523973

約数列:

[1, 3, 7, 9, 21, 63, 151, 453, 1057, 1359, 1987, 3171, 5961, 9513, 13909, 17883, 41727, 125181, 300037, 900111, 2100259, 2700333, 6300777, 18902331]

約数ペア:

[(1, 18902331), (3, 6300777), (7, 2700333), (9, 2100259), (21, 900111), (63, 300037), (151, 125181), (453, 41727), (1057, 17883), (1359, 13909), (1987, 9513), (3171, 5961)]