397446680

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{148301}}^1$

素因数の和:148379

約数の個数: 32

約数和(自身を含む): 907608240

約数和(自身を除く): 510161560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 148301, 296602, 593204, 741505, 1186408, 1483010, 2966020, 5932040, 9936167, 19872334, 39744668, 49680835, 79489336, 99361670, 198723340, 397446680]

約数ペア:

[(1, 397446680), (2, 198723340), (4, 99361670), (5, 79489336), (8, 49680835), (10, 39744668), (20, 19872334), (40, 9936167), (67, 5932040), (134, 2966020), (268, 1483010), (335, 1186408), (536, 741505), (670, 593204), (1340, 296602), (2680, 148301)]