20748610

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66931}}^1$

素因数の和:66969

約数の個数: 16

約数和(自身を含む): 38552832

約数和(自身を除く): 17804222

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 66931, 133862, 334655, 669310, 2074861, 4149722, 10374305, 20748610]

約数ペア:

[(1, 20748610), (2, 10374305), (5, 4149722), (10, 2074861), (31, 669310), (62, 334655), (155, 133862), (310, 66931)]