28555716

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19997}}^1$

素因数の和:20028

約数の個数: 48

約数和(自身を含む): 80631936

約数和(自身を除く): 52076220

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 51, 68, 84, 102, 119, 204, 238, 357, 476, 714, 1428, 19997, 39994, 59991, 79988, 119982, 139979, 239964, 279958, 339949, 419937, 559916, 679898, 839874, 1019847, 1359796, 1679748, 2039694, 2379643, 4079388, 4759286, 7138929, 9518572, 14277858, 28555716]

約数ペア:

[(1, 28555716), (2, 14277858), (3, 9518572), (4, 7138929), (6, 4759286), (7, 4079388), (12, 2379643), (14, 2039694), (17, 1679748), (21, 1359796), (28, 1019847), (34, 839874), (42, 679898), (51, 559916), (68, 419937), (84, 339949), (102, 279958), (119, 239964), (204, 139979), (238, 119982), (357, 79988), (476, 59991), (714, 39994), (1428, 19997)]