21009972

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2143}}^1$

素因数の和:2212

約数の個数: 48

約数和(自身を含む): 52828160

約数和(自身を除く): 31818188

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 43, 57, 76, 86, 114, 129, 172, 228, 258, 516, 817, 1634, 2143, 2451, 3268, 4286, 4902, 6429, 8572, 9804, 12858, 25716, 40717, 81434, 92149, 122151, 162868, 184298, 244302, 276447, 368596, 488604, 552894, 1105788, 1750831, 3501662, 5252493, 7003324, 10504986, 21009972]

約数ペア:

[(1, 21009972), (2, 10504986), (3, 7003324), (4, 5252493), (6, 3501662), (12, 1750831), (19, 1105788), (38, 552894), (43, 488604), (57, 368596), (76, 276447), (86, 244302), (114, 184298), (129, 162868), (172, 122151), (228, 92149), (258, 81434), (516, 40717), (817, 25716), (1634, 12858), (2143, 9804), (2451, 8572), (3268, 6429), (4286, 4902)]