278345678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{2339}}^1$

素因数の和:2576

約数の個数: 32

約数和(自身を含む): 471744000

約数和(自身を除く): 193398322

約数列:

[1, 2, 13, 23, 26, 46, 199, 299, 398, 598, 2339, 2587, 4577, 4678, 5174, 9154, 30407, 53797, 59501, 60814, 107594, 119002, 465461, 699361, 930922, 1398722, 6050993, 10705603, 12101986, 21411206, 139172839, 278345678]

約数ペア:

[(1, 278345678), (2, 139172839), (13, 21411206), (23, 12101986), (26, 10705603), (46, 6050993), (199, 1398722), (299, 930922), (398, 699361), (598, 465461), (2339, 119002), (2587, 107594), (4577, 60814), (4678, 59501), (5174, 53797), (9154, 30407)]