18197380

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2269}}^1$

素因数の和:2679

約数の個数: 24

約数和(自身を含む): 38326680

約数和(自身を除く): 20129300

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 2269, 4010, 4538, 8020, 9076, 11345, 22690, 45380, 909869, 1819738, 3639476, 4549345, 9098690, 18197380]

約数ペア:

[(1, 18197380), (2, 9098690), (4, 4549345), (5, 3639476), (10, 1819738), (20, 909869), (401, 45380), (802, 22690), (1604, 11345), (2005, 9076), (2269, 8020), (4010, 4538)]