128216240

素因数分解:

$2^4\times 5^1\times {\mathrm{1602703}}^1$

素因数の和:1602716

約数の個数: 20

約数和(自身を含む): 298102944

約数和(自身を除く): 169886704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1602703, 3205406, 6410812, 8013515, 12821624, 16027030, 25643248, 32054060, 64108120, 128216240]

約数ペア:

[(1, 128216240), (2, 64108120), (4, 32054060), (5, 25643248), (8, 16027030), (10, 12821624), (16, 8013515), (20, 6410812), (40, 3205406), (80, 1602703)]