639450245

素因数分解:

$5^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{9631}}^1$

素因数の和:9921

約数の個数: 24

約数和(自身を含む): 896007168

約数和(自身を除く): 256556923

約数列:

[1, 5, 7, 35, 49, 245, 271, 1355, 1897, 9485, 9631, 13279, 48155, 66395, 67417, 337085, 471919, 2359595, 2610001, 13050005, 18270007, 91350035, 127890049, 639450245]

約数ペア:

[(1, 639450245), (5, 127890049), (7, 91350035), (35, 18270007), (49, 13050005), (245, 2610001), (271, 2359595), (1355, 471919), (1897, 337085), (9485, 67417), (9631, 66395), (13279, 48155)]