20108320

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1153}}^1$

素因数の和:1277

約数の個数: 48

約数和(自身を含む): 47983320

約数和(自身を除く): 27875000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 545, 872, 1090, 1153, 1744, 2180, 2306, 3488, 4360, 4612, 5765, 8720, 9224, 11530, 17440, 18448, 23060, 36896, 46120, 92240, 125677, 184480, 251354, 502708, 628385, 1005416, 1256770, 2010832, 2513540, 4021664, 5027080, 10054160, 20108320]

約数ペア:

[(1, 20108320), (2, 10054160), (4, 5027080), (5, 4021664), (8, 2513540), (10, 2010832), (16, 1256770), (20, 1005416), (32, 628385), (40, 502708), (80, 251354), (109, 184480), (160, 125677), (218, 92240), (436, 46120), (545, 36896), (872, 23060), (1090, 18448), (1153, 17440), (1744, 11530), (2180, 9224), (2306, 8720), (3488, 5765), (4360, 4612)]