1640764528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{254461}}^1$

素因数の和:254513

約数の個数: 40

約数和(自身を含む): 3533968256

約数和(自身を除く): 1893203728

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 254461, 508922, 1017844, 2035688, 3307993, 4071376, 6615986, 7888291, 13231972, 15776582, 26463944, 31553164, 52927888, 63106328, 102547783, 126212656, 205095566, 410191132, 820382264, 1640764528]

約数ペア:

[(1, 1640764528), (2, 820382264), (4, 410191132), (8, 205095566), (13, 126212656), (16, 102547783), (26, 63106328), (31, 52927888), (52, 31553164), (62, 26463944), (104, 15776582), (124, 13231972), (208, 7888291), (248, 6615986), (403, 4071376), (496, 3307993), (806, 2035688), (1612, 1017844), (3224, 508922), (6448, 254461)]