20213445

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{619}}^1$

素因数の和:945

約数の個数: 32

約数和(自身を含む): 37140480

約数和(自身を除く): 16927035

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 311, 619, 933, 1555, 1857, 2177, 3095, 4333, 4665, 6531, 9285, 10885, 12999, 21665, 32655, 64995, 192509, 577527, 962545, 1347563, 2887635, 4042689, 6737815, 20213445]

約数ペア:

[(1, 20213445), (3, 6737815), (5, 4042689), (7, 2887635), (15, 1347563), (21, 962545), (35, 577527), (105, 192509), (311, 64995), (619, 32655), (933, 21665), (1555, 12999), (1857, 10885), (2177, 9285), (3095, 6531), (4333, 4665)]