678888

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{449}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 2160000

約数和(自身を除く): 1481112

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 84, 108, 126, 168, 189, 216, 252, 378, 449, 504, 756, 898, 1347, 1512, 1796, 2694, 3143, 3592, 4041, 5388, 6286, 8082, 9429, 10776, 12123, 12572, 16164, 18858, 24246, 25144, 28287, 32328, 37716, 48492, 56574, 75432, 84861, 96984, 113148, 169722, 226296, 339444, 678888]

約数ペア:

[(1, 678888), (2, 339444), (3, 226296), (4, 169722), (6, 113148), (7, 96984), (8, 84861), (9, 75432), (12, 56574), (14, 48492), (18, 37716), (21, 32328), (24, 28287), (27, 25144), (28, 24246), (36, 18858), (42, 16164), (54, 12572), (56, 12123), (63, 10776), (72, 9429), (84, 8082), (108, 6286), (126, 5388), (168, 4041), (189, 3592), (216, 3143), (252, 2694), (378, 1796), (449, 1512), (504, 1347), (756, 898)]