201991150

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{51137}}^1$

素因数の和:51228

約数の個数: 24

約数和(自身を含む): 380466720

約数和(自身を除く): 178475570

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 51137, 102274, 255685, 511370, 1278425, 2556850, 4039823, 8079646, 20199115, 40398230, 100995575, 201991150]

約数ペア:

[(1, 201991150), (2, 100995575), (5, 40398230), (10, 20199115), (25, 8079646), (50, 4039823), (79, 2556850), (158, 1278425), (395, 511370), (790, 255685), (1975, 102274), (3950, 51137)]