21398004

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{601}}^1$

素因数の和:677

約数の個数: 72

約数和(自身を含む): 57849792

約数和(自身を除く): 36451788

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, 601, 774, 828, 989, 1202, 1548, 1803, 1978, 2404, 2967, 3606, 3956, 5409, 5934, 7212, 8901, 10818, 11868, 13823, 17802, 21636, 25843, 27646, 35604, 41469, 51686, 55292, 77529, 82938, 103372, 124407, 155058, 165876, 232587, 248814, 310116, 465174, 497628, 594389, 930348, 1188778, 1783167, 2377556, 3566334, 5349501, 7132668, 10699002, 21398004]

約数ペア:

[(1, 21398004), (2, 10699002), (3, 7132668), (4, 5349501), (6, 3566334), (9, 2377556), (12, 1783167), (18, 1188778), (23, 930348), (36, 594389), (43, 497628), (46, 465174), (69, 310116), (86, 248814), (92, 232587), (129, 165876), (138, 155058), (172, 124407), (207, 103372), (258, 82938), (276, 77529), (387, 55292), (414, 51686), (516, 41469), (601, 35604), (774, 27646), (828, 25843), (989, 21636), (1202, 17802), (1548, 13823), (1803, 11868), (1978, 10818), (2404, 8901), (2967, 7212), (3606, 5934), (3956, 5409)]