19688080

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{571}}^1$

素因数の和:1015

約数の個数: 40

約数和(自身を含む): 45961344

約数和(自身を除く): 26273264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 571, 862, 1142, 1724, 2155, 2284, 2855, 3448, 4310, 4568, 5710, 6896, 8620, 9136, 11420, 17240, 22840, 34480, 45680, 246101, 492202, 984404, 1230505, 1968808, 2461010, 3937616, 4922020, 9844040, 19688080]

約数ペア:

[(1, 19688080), (2, 9844040), (4, 4922020), (5, 3937616), (8, 2461010), (10, 1968808), (16, 1230505), (20, 984404), (40, 492202), (80, 246101), (431, 45680), (571, 34480), (862, 22840), (1142, 17240), (1724, 11420), (2155, 9136), (2284, 8620), (2855, 6896), (3448, 5710), (4310, 4568)]