81068840

素因数分解:

$2^3\times 5^1\times {\mathrm{2026721}}^1$

素因数の和:2026732

約数の個数: 16

約数和(自身を含む): 182404980

約数和(自身を除く): 101336140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2026721, 4053442, 8106884, 10133605, 16213768, 20267210, 40534420, 81068840]

約数ペア:

[(1, 81068840), (2, 40534420), (4, 20267210), (5, 16213768), (8, 10133605), (10, 8106884), (20, 4053442), (40, 2026721)]