20088440

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1439}}^1$

素因数の和:1799

約数の個数: 32

約数和(自身を含む): 45360000

約数和(自身を除く): 25271560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1439, 1745, 2792, 2878, 3490, 5756, 6980, 7195, 11512, 13960, 14390, 28780, 57560, 502211, 1004422, 2008844, 2511055, 4017688, 5022110, 10044220, 20088440]

約数ペア:

[(1, 20088440), (2, 10044220), (4, 5022110), (5, 4017688), (8, 2511055), (10, 2008844), (20, 1004422), (40, 502211), (349, 57560), (698, 28780), (1396, 14390), (1439, 13960), (1745, 11512), (2792, 7195), (2878, 6980), (3490, 5756)]