21113172

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1$

素因数の和:669

約数の個数: 72

約数和(自身を含む): 57081024

約数和(自身を除く): 35967852

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, 593, 774, 828, 989, 1186, 1548, 1779, 1978, 2372, 2967, 3558, 3956, 5337, 5934, 7116, 8901, 10674, 11868, 13639, 17802, 21348, 25499, 27278, 35604, 40917, 50998, 54556, 76497, 81834, 101996, 122751, 152994, 163668, 229491, 245502, 305988, 458982, 491004, 586477, 917964, 1172954, 1759431, 2345908, 3518862, 5278293, 7037724, 10556586, 21113172]

約数ペア:

[(1, 21113172), (2, 10556586), (3, 7037724), (4, 5278293), (6, 3518862), (9, 2345908), (12, 1759431), (18, 1172954), (23, 917964), (36, 586477), (43, 491004), (46, 458982), (69, 305988), (86, 245502), (92, 229491), (129, 163668), (138, 152994), (172, 122751), (207, 101996), (258, 81834), (276, 76497), (387, 54556), (414, 50998), (516, 40917), (593, 35604), (774, 27278), (828, 25499), (989, 21348), (1186, 17802), (1548, 13639), (1779, 11868), (1978, 10674), (2372, 8901), (2967, 7116), (3558, 5934), (3956, 5337)]