1998495

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:599

約数の個数: 24

約数和(自身を含む): 3510000

約数和(自身を除く): 1511505

約数列:

[1, 3, 5, 9, 15, 45, 89, 267, 445, 499, 801, 1335, 1497, 2495, 4005, 4491, 7485, 22455, 44411, 133233, 222055, 399699, 666165, 1998495]

約数ペア:

[(1, 1998495), (3, 666165), (5, 399699), (9, 222055), (15, 133233), (45, 44411), (89, 22455), (267, 7485), (445, 4491), (499, 4005), (801, 2495), (1335, 1497)]