18914004

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{431}}^1$

素因数の和:517

約数の個数: 72

約数和(自身を含む): 50948352

約数和(自身を除く): 32034348

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 53, 69, 92, 106, 138, 159, 207, 212, 276, 318, 414, 431, 477, 636, 828, 862, 954, 1219, 1293, 1724, 1908, 2438, 2586, 3657, 3879, 4876, 5172, 7314, 7758, 9913, 10971, 14628, 15516, 19826, 21942, 22843, 29739, 39652, 43884, 45686, 59478, 68529, 89217, 91372, 118956, 137058, 178434, 205587, 274116, 356868, 411174, 525389, 822348, 1050778, 1576167, 2101556, 3152334, 4728501, 6304668, 9457002, 18914004]

約数ペア:

[(1, 18914004), (2, 9457002), (3, 6304668), (4, 4728501), (6, 3152334), (9, 2101556), (12, 1576167), (18, 1050778), (23, 822348), (36, 525389), (46, 411174), (53, 356868), (69, 274116), (92, 205587), (106, 178434), (138, 137058), (159, 118956), (207, 91372), (212, 89217), (276, 68529), (318, 59478), (414, 45686), (431, 43884), (477, 39652), (636, 29739), (828, 22843), (862, 21942), (954, 19826), (1219, 15516), (1293, 14628), (1724, 10971), (1908, 9913), (2438, 7758), (2586, 7314), (3657, 5172), (3879, 4876)]