20169905

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 29652480

約数和(自身を除く): 9482575

約数列:

[1, 5, 7, 17, 35, 85, 109, 119, 311, 545, 595, 763, 1555, 1853, 2177, 3815, 5287, 9265, 10885, 12971, 26435, 33899, 37009, 64855, 169495, 185045, 237293, 576283, 1186465, 2881415, 4033981, 20169905]

約数ペア:

[(1, 20169905), (5, 4033981), (7, 2881415), (17, 1186465), (35, 576283), (85, 237293), (109, 185045), (119, 169495), (311, 64855), (545, 37009), (595, 33899), (763, 26435), (1555, 12971), (1853, 10885), (2177, 9265), (3815, 5287)]