21390012

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4993}}^1$

素因数の和:5027

約数の個数: 72

約数和(自身を含む): 65441376

約数和(自身を除く): 44051364

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 2142, 4284, 4993, 9986, 14979, 19972, 29958, 34951, 44937, 59916, 69902, 84881, 89874, 104853, 139804, 169762, 179748, 209706, 254643, 314559, 339524, 419412, 509286, 594167, 629118, 763929, 1018572, 1188334, 1258236, 1527858, 1782501, 2376668, 3055716, 3565002, 5347503, 7130004, 10695006, 21390012]

約数ペア:

[(1, 21390012), (2, 10695006), (3, 7130004), (4, 5347503), (6, 3565002), (7, 3055716), (9, 2376668), (12, 1782501), (14, 1527858), (17, 1258236), (18, 1188334), (21, 1018572), (28, 763929), (34, 629118), (36, 594167), (42, 509286), (51, 419412), (63, 339524), (68, 314559), (84, 254643), (102, 209706), (119, 179748), (126, 169762), (153, 139804), (204, 104853), (238, 89874), (252, 84881), (306, 69902), (357, 59916), (476, 44937), (612, 34951), (714, 29958), (1071, 19972), (1428, 14979), (2142, 9986), (4284, 4993)]