138465620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97511}}^1$

素因数の和:97591

約数の個数: 24

約数和(自身を含む): 294876288

約数和(自身を除く): 156410668

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 97511, 195022, 390044, 487555, 975110, 1950220, 6923281, 13846562, 27693124, 34616405, 69232810, 138465620]

約数ペア:

[(1, 138465620), (2, 69232810), (4, 34616405), (5, 27693124), (10, 13846562), (20, 6923281), (71, 1950220), (142, 975110), (284, 487555), (355, 390044), (710, 195022), (1420, 97511)]