18888255

素因数分解:

$3^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{773}}^1$

素因数の和:968

約数の個数: 32

約数和(自身を含む): 33808320

約数和(自身を除く): 14920065

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 181, 543, 773, 905, 1629, 2319, 2715, 3865, 4887, 6957, 8145, 11595, 20871, 24435, 34785, 104355, 139913, 419739, 699565, 1259217, 2098695, 3777651, 6296085, 18888255]

約数ペア:

[(1, 18888255), (3, 6296085), (5, 3777651), (9, 2098695), (15, 1259217), (27, 699565), (45, 419739), (135, 139913), (181, 104355), (543, 34785), (773, 24435), (905, 20871), (1629, 11595), (2319, 8145), (2715, 6957), (3865, 4887)]