21302720

素因数分解:

$2^6\times 5^1\times {\mathrm{66571}}^1$

素因数の和:66588

約数の個数: 28

約数和(自身を含む): 50727864

約数和(自身を除く): 29425144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66571, 133142, 266284, 332855, 532568, 665710, 1065136, 1331420, 2130272, 2662840, 4260544, 5325680, 10651360, 21302720]

約数ペア:

[(1, 21302720), (2, 10651360), (4, 5325680), (5, 4260544), (8, 2662840), (10, 2130272), (16, 1331420), (20, 1065136), (32, 665710), (40, 532568), (64, 332855), (80, 266284), (160, 133142), (320, 66571)]