18990225

素因数分解:

$3^2\times 5^2\times {\mathrm{84401}}^1$

素因数の和:84417

約数の個数: 18

約数和(自身を含む): 34014006

約数和(自身を除く): 15023781

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 84401, 253203, 422005, 759609, 1266015, 2110025, 3798045, 6330075, 18990225]

約数ペア:

[(1, 18990225), (3, 6330075), (5, 3798045), (9, 2110025), (15, 1266015), (25, 759609), (45, 422005), (75, 253203), (225, 84401)]