21670928

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{2113}}^1$

素因数の和:2762

約数の個数: 20

約数和(自身を含む): 42072828

約数和(自身を除く): 20401900

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2113, 2564, 4226, 5128, 8452, 10256, 16904, 33808, 1354433, 2708866, 5417732, 10835464, 21670928]

約数ペア:

[(1, 21670928), (2, 10835464), (4, 5417732), (8, 2708866), (16, 1354433), (641, 33808), (1282, 16904), (2113, 10256), (2564, 8452), (4226, 5128)]