21906064

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80537}}^1$

素因数の和:80562

約数の個数: 20

約数和(自身を含む): 44940204

約数和(自身を除く): 23034140

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80537, 161074, 322148, 644296, 1288592, 1369129, 2738258, 5476516, 10953032, 21906064]

約数ペア:

[(1, 21906064), (2, 10953032), (4, 5476516), (8, 2738258), (16, 1369129), (17, 1288592), (34, 644296), (68, 322148), (136, 161074), (272, 80537)]