31384720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{491}}^1$

素因数の和:568

約数の個数: 80

約数和(自身を含む): 79066368

約数和(自身を除く): 47681648

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 47, 68, 80, 85, 94, 136, 170, 188, 235, 272, 340, 376, 470, 491, 680, 752, 799, 940, 982, 1360, 1598, 1880, 1964, 2455, 3196, 3760, 3928, 3995, 4910, 6392, 7856, 7990, 8347, 9820, 12784, 15980, 16694, 19640, 23077, 31960, 33388, 39280, 41735, 46154, 63920, 66776, 83470, 92308, 115385, 133552, 166940, 184616, 230770, 333880, 369232, 392309, 461540, 667760, 784618, 923080, 1569236, 1846160, 1961545, 3138472, 3923090, 6276944, 7846180, 15692360, 31384720]

約数ペア:

[(1, 31384720), (2, 15692360), (4, 7846180), (5, 6276944), (8, 3923090), (10, 3138472), (16, 1961545), (17, 1846160), (20, 1569236), (34, 923080), (40, 784618), (47, 667760), (68, 461540), (80, 392309), (85, 369232), (94, 333880), (136, 230770), (170, 184616), (188, 166940), (235, 133552), (272, 115385), (340, 92308), (376, 83470), (470, 66776), (491, 63920), (680, 46154), (752, 41735), (799, 39280), (940, 33388), (982, 31960), (1360, 23077), (1598, 19640), (1880, 16694), (1964, 15980), (2455, 12784), (3196, 9820), (3760, 8347), (3928, 7990), (3995, 7856), (4910, 6392)]