21480320

素因数分解:

$2^7\times 5^1\times {\mathrm{33563}}^1$

素因数の和:33582

約数の個数: 32

約数和(自身を含む): 51352920

約数和(自身を除く): 29872600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33563, 67126, 134252, 167815, 268504, 335630, 537008, 671260, 1074016, 1342520, 2148032, 2685040, 4296064, 5370080, 10740160, 21480320]

約数ペア:

[(1, 21480320), (2, 10740160), (4, 5370080), (5, 4296064), (8, 2685040), (10, 2148032), (16, 1342520), (20, 1074016), (32, 671260), (40, 537008), (64, 335630), (80, 268504), (128, 167815), (160, 134252), (320, 67126), (640, 33563)]