20899548

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:663

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 35604900

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 43, 46, 69, 86, 92, 129, 138, 172, 207, 258, 276, 387, 414, 516, 587, 774, 828, 989, 1174, 1548, 1761, 1978, 2348, 2967, 3522, 3956, 5283, 5934, 7044, 8901, 10566, 11868, 13501, 17802, 21132, 25241, 27002, 35604, 40503, 50482, 54004, 75723, 81006, 100964, 121509, 151446, 162012, 227169, 243018, 302892, 454338, 486036, 580543, 908676, 1161086, 1741629, 2322172, 3483258, 5224887, 6966516, 10449774, 20899548]

約数ペア:

[(1, 20899548), (2, 10449774), (3, 6966516), (4, 5224887), (6, 3483258), (9, 2322172), (12, 1741629), (18, 1161086), (23, 908676), (36, 580543), (43, 486036), (46, 454338), (69, 302892), (86, 243018), (92, 227169), (129, 162012), (138, 151446), (172, 121509), (207, 100964), (258, 81006), (276, 75723), (387, 54004), (414, 50482), (516, 40503), (587, 35604), (774, 27002), (828, 25241), (989, 21132), (1174, 17802), (1548, 13501), (1761, 11868), (1978, 10566), (2348, 8901), (2967, 7044), (3522, 5934), (3956, 5283)]