39820720

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3581}}^1$

素因数の和:3733

約数の個数: 40

約数和(自身を含む): 93275280

約数和(自身を除く): 53454560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 3581, 5560, 7162, 11120, 14324, 17905, 28648, 35810, 57296, 71620, 143240, 286480, 497759, 995518, 1991036, 2488795, 3982072, 4977590, 7964144, 9955180, 19910360, 39820720]

約数ペア:

[(1, 39820720), (2, 19910360), (4, 9955180), (5, 7964144), (8, 4977590), (10, 3982072), (16, 2488795), (20, 1991036), (40, 995518), (80, 497759), (139, 286480), (278, 143240), (556, 71620), (695, 57296), (1112, 35810), (1390, 28648), (2224, 17905), (2780, 14324), (3581, 11120), (5560, 7162)]