20673445

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{353}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 28903392

約数和(自身を除く): 8229947

約数列:

[1, 5, 13, 17, 53, 65, 85, 221, 265, 353, 689, 901, 1105, 1765, 3445, 4505, 4589, 6001, 11713, 18709, 22945, 30005, 58565, 78013, 93545, 243217, 318053, 390065, 1216085, 1590265, 4134689, 20673445]

約数ペア:

[(1, 20673445), (5, 4134689), (13, 1590265), (17, 1216085), (53, 390065), (65, 318053), (85, 243217), (221, 93545), (265, 78013), (353, 58565), (689, 30005), (901, 22945), (1105, 18709), (1765, 11713), (3445, 6001), (4505, 4589)]