21239496

素因数分解:

$2^3\times 3^4\times {\mathrm{73}}^1\times {\mathrm{449}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 60439500

約数和(自身を除く): 39200004

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 73, 81, 108, 146, 162, 216, 219, 292, 324, 438, 449, 584, 648, 657, 876, 898, 1314, 1347, 1752, 1796, 1971, 2628, 2694, 3592, 3942, 4041, 5256, 5388, 5913, 7884, 8082, 10776, 11826, 12123, 15768, 16164, 23652, 24246, 32328, 32777, 36369, 47304, 48492, 65554, 72738, 96984, 98331, 131108, 145476, 196662, 262216, 290952, 294993, 393324, 589986, 786648, 884979, 1179972, 1769958, 2359944, 2654937, 3539916, 5309874, 7079832, 10619748, 21239496]

約数ペア:

[(1, 21239496), (2, 10619748), (3, 7079832), (4, 5309874), (6, 3539916), (8, 2654937), (9, 2359944), (12, 1769958), (18, 1179972), (24, 884979), (27, 786648), (36, 589986), (54, 393324), (72, 294993), (73, 290952), (81, 262216), (108, 196662), (146, 145476), (162, 131108), (216, 98331), (219, 96984), (292, 72738), (324, 65554), (438, 48492), (449, 47304), (584, 36369), (648, 32777), (657, 32328), (876, 24246), (898, 23652), (1314, 16164), (1347, 15768), (1752, 12123), (1796, 11826), (1971, 10776), (2628, 8082), (2694, 7884), (3592, 5913), (3942, 5388), (4041, 5256)]