2660080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{811}}^1$

素因数の和:865

約数の個数: 40

約数和(自身を含む): 6343344

約数和(自身を除く): 3683264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 811, 820, 1622, 1640, 3244, 3280, 4055, 6488, 8110, 12976, 16220, 32440, 33251, 64880, 66502, 133004, 166255, 266008, 332510, 532016, 665020, 1330040, 2660080]

約数ペア:

[(1, 2660080), (2, 1330040), (4, 665020), (5, 532016), (8, 332510), (10, 266008), (16, 166255), (20, 133004), (40, 66502), (41, 64880), (80, 33251), (82, 32440), (164, 16220), (205, 12976), (328, 8110), (410, 6488), (656, 4055), (811, 3280), (820, 3244), (1622, 1640)]