28978306

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 54172800

約数和(自身を除く): 25194494

約数列:

[1, 2, 7, 14, 19, 38, 49, 79, 98, 133, 158, 197, 266, 394, 553, 931, 1106, 1379, 1501, 1862, 2758, 3002, 3743, 3871, 7486, 7742, 9653, 10507, 15563, 19306, 21014, 26201, 31126, 52402, 73549, 108941, 147098, 183407, 217882, 295697, 366814, 591394, 762587, 1525174, 2069879, 4139758, 14489153, 28978306]

約数ペア:

[(1, 28978306), (2, 14489153), (7, 4139758), (14, 2069879), (19, 1525174), (38, 762587), (49, 591394), (79, 366814), (98, 295697), (133, 217882), (158, 183407), (197, 147098), (266, 108941), (394, 73549), (553, 52402), (931, 31126), (1106, 26201), (1379, 21014), (1501, 19306), (1862, 15563), (2758, 10507), (3002, 9653), (3743, 7742), (3871, 7486)]