90971120

素因数分解:

$2^4\times 5^1\times {\mathrm{1137139}}^1$

素因数の和:1137152

約数の個数: 20

約数和(自身を含む): 211508040

約数和(自身を除く): 120536920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1137139, 2274278, 4548556, 5685695, 9097112, 11371390, 18194224, 22742780, 45485560, 90971120]

約数ペア:

[(1, 90971120), (2, 45485560), (4, 22742780), (5, 18194224), (8, 11371390), (10, 9097112), (16, 5685695), (20, 4548556), (40, 2274278), (80, 1137139)]