21182356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 21153644

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 89, 92, 178, 199, 299, 356, 398, 598, 796, 1157, 1196, 2047, 2314, 2587, 4094, 4577, 4628, 5174, 8188, 9154, 10348, 17711, 18308, 26611, 35422, 53222, 59501, 70844, 106444, 119002, 230243, 238004, 407353, 460486, 814706, 920972, 1629412, 5295589, 10591178, 21182356]

約数ペア:

[(1, 21182356), (2, 10591178), (4, 5295589), (13, 1629412), (23, 920972), (26, 814706), (46, 460486), (52, 407353), (89, 238004), (92, 230243), (178, 119002), (199, 106444), (299, 70844), (356, 59501), (398, 53222), (598, 35422), (796, 26611), (1157, 18308), (1196, 17711), (2047, 10348), (2314, 9154), (2587, 8188), (4094, 5174), (4577, 4628)]