21129032

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{37199}}^1$

素因数の和:37276

約数の個数: 16

約数和(自身を含む): 40176000

約数和(自身を除く): 19046968

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 37199, 74398, 148796, 297592, 2641129, 5282258, 10564516, 21129032]

約数ペア:

[(1, 21129032), (2, 10564516), (4, 5282258), (8, 2641129), (71, 297592), (142, 148796), (284, 74398), (568, 37199)]