21782720

素因数分解:

$2^6\times 5^1\times {\mathrm{68071}}^1$

素因数の和:68088

約数の個数: 28

約数和(自身を含む): 51870864

約数和(自身を除く): 30088144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68071, 136142, 272284, 340355, 544568, 680710, 1089136, 1361420, 2178272, 2722840, 4356544, 5445680, 10891360, 21782720]

約数ペア:

[(1, 21782720), (2, 10891360), (4, 5445680), (5, 4356544), (8, 2722840), (10, 2178272), (16, 1361420), (20, 1089136), (32, 680710), (40, 544568), (64, 340355), (80, 272284), (160, 136142), (320, 68071)]