21670105

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{751}}^1$

素因数の和:984

約数の個数: 16

約数和(自身を含む): 27072000

約数和(自身を除く): 5401895

約数列:

[1, 5, 29, 145, 199, 751, 995, 3755, 5771, 21779, 28855, 108895, 149449, 747245, 4334021, 21670105]

約数ペア:

[(1, 21670105), (5, 4334021), (29, 747245), (145, 149449), (199, 108895), (751, 28855), (995, 21779), (3755, 5771)]