21490765

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{1327}}^1$

素因数の和:1452

約数の個数: 16

約数和(自身を含む): 26772480

約数和(自身を除く): 5281715

約数列:

[1, 5, 41, 79, 205, 395, 1327, 3239, 6635, 16195, 54407, 104833, 272035, 524165, 4298153, 21490765]

約数ペア:

[(1, 21490765), (5, 4298153), (41, 524165), (79, 272035), (205, 104833), (395, 54407), (1327, 16195), (3239, 6635)]