18879926

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:344

約数の個数: 32

約数和(自身を含む): 31752000

約数和(自身を除く): 12872074

約数列:

[1, 2, 13, 26, 41, 82, 89, 178, 199, 398, 533, 1066, 1157, 2314, 2587, 3649, 5174, 7298, 8159, 16318, 17711, 35422, 47437, 94874, 106067, 212134, 230243, 460486, 726151, 1452302, 9439963, 18879926]

約数ペア:

[(1, 18879926), (2, 9439963), (13, 1452302), (26, 726151), (41, 460486), (82, 230243), (89, 212134), (178, 106067), (199, 94874), (398, 47437), (533, 35422), (1066, 17711), (1157, 16318), (2314, 8159), (2587, 7298), (3649, 5174)]