1276640

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:195

約数の個数: 48

約数和(自身を含む): 3084480

約数和(自身を除く): 1807840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 101, 158, 160, 202, 316, 395, 404, 505, 632, 790, 808, 1010, 1264, 1580, 1616, 2020, 2528, 3160, 3232, 4040, 6320, 7979, 8080, 12640, 15958, 16160, 31916, 39895, 63832, 79790, 127664, 159580, 255328, 319160, 638320, 1276640]

約数ペア:

[(1, 1276640), (2, 638320), (4, 319160), (5, 255328), (8, 159580), (10, 127664), (16, 79790), (20, 63832), (32, 39895), (40, 31916), (79, 16160), (80, 15958), (101, 12640), (158, 8080), (160, 7979), (202, 6320), (316, 4040), (395, 3232), (404, 3160), (505, 2528), (632, 2020), (790, 1616), (808, 1580), (1010, 1264)]