978020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{619}}^1$

素因数の和:707

約数の個数: 24

約数和(自身を含む): 2083200

約数和(自身を除く): 1105180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 619, 790, 1238, 1580, 2476, 3095, 6190, 12380, 48901, 97802, 195604, 244505, 489010, 978020]

約数ペア:

[(1, 978020), (2, 489010), (4, 244505), (5, 195604), (10, 97802), (20, 48901), (79, 12380), (158, 6190), (316, 3095), (395, 2476), (619, 1580), (790, 1238)]