198556720

素因数分解:

$2^4\times 5^1\times {\mathrm{2481959}}^1$

素因数の和:2481972

約数の個数: 20

約数和(自身を含む): 461644560

約数和(自身を除く): 263087840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2481959, 4963918, 9927836, 12409795, 19855672, 24819590, 39711344, 49639180, 99278360, 198556720]

約数ペア:

[(1, 198556720), (2, 99278360), (4, 49639180), (5, 39711344), (8, 24819590), (10, 19855672), (16, 12409795), (20, 9927836), (40, 4963918), (80, 2481959)]