639893406

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{2480207}}^1$

素因数の和:2480255

約数の個数: 16

約数和(自身を含む): 1309549824

約数和(自身を除く): 669656418

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 2480207, 4960414, 7440621, 14881242, 106648901, 213297802, 319946703, 639893406]

約数ペア:

[(1, 639893406), (2, 319946703), (3, 213297802), (6, 106648901), (43, 14881242), (86, 7440621), (129, 4960414), (258, 2480207)]