19987716

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{13997}}^1$

素因数の和:14028

約数の個数: 48

約数和(自身を含む): 56439936

約数和(自身を除く): 36452220

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, 13997, 27994, 41991, 55988, 83982, 97979, 167964, 195958, 237949, 293937, 391916, 475898, 587874, 713847, 951796, 1175748, 1427694, 1665643, 2855388, 3331286, 4996929, 6662572, 9993858, 19987716]

約数ペア:

[(1, 19987716), (2, 9993858), (3, 6662572), (4, 4996929), (6, 3331286), (7, 2855388), (12, 1665643), (14, 1427694), (17, 1175748), (21, 951796), (28, 713847), (34, 587874), (42, 475898), (51, 391916), (68, 293937), (84, 237949), (102, 195958), (119, 167964), (204, 97979), (238, 83982), (357, 55988), (476, 41991), (714, 27994), (1428, 13997)]