390681320

素因数分解:

$2^3\times 5^1\times {\mathrm{701}}^1\times {\mathrm{13933}}^1$

素因数の和:14645

約数の個数: 32

約数和(自身を含む): 880350120

約数和(自身を除く): 489668800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 701, 1402, 2804, 3505, 5608, 7010, 13933, 14020, 27866, 28040, 55732, 69665, 111464, 139330, 278660, 557320, 9767033, 19534066, 39068132, 48835165, 78136264, 97670330, 195340660, 390681320]

約数ペア:

[(1, 390681320), (2, 195340660), (4, 97670330), (5, 78136264), (8, 48835165), (10, 39068132), (20, 19534066), (40, 9767033), (701, 557320), (1402, 278660), (2804, 139330), (3505, 111464), (5608, 69665), (7010, 55732), (13933, 28040), (14020, 27866)]