1640984457

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{857}}^1\times {\mathrm{4799}}^1$

素因数の和:5685

約数の個数: 32

約数和(自身を含む): 2635776000

約数和(自身を除く): 994791543

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 857, 2571, 4799, 5999, 14397, 16283, 17997, 33593, 48849, 91181, 100779, 113981, 273543, 341943, 638267, 1914801, 4112743, 12338229, 28789201, 78142117, 86367603, 234426351, 546994819, 1640984457]

約数ペア:

[(1, 1640984457), (3, 546994819), (7, 234426351), (19, 86367603), (21, 78142117), (57, 28789201), (133, 12338229), (399, 4112743), (857, 1914801), (2571, 638267), (4799, 341943), (5999, 273543), (14397, 113981), (16283, 100779), (17997, 91181), (33593, 48849)]