20679945

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 40255488

約数和(自身を除く): 19575543

約数列:

[1, 3, 5, 11, 13, 15, 31, 33, 39, 55, 65, 93, 143, 155, 165, 195, 311, 341, 403, 429, 465, 715, 933, 1023, 1209, 1555, 1705, 2015, 2145, 3421, 4043, 4433, 4665, 5115, 6045, 9641, 10263, 12129, 13299, 17105, 20215, 22165, 28923, 44473, 48205, 51315, 60645, 66495, 106051, 125333, 133419, 144615, 222365, 318153, 375999, 530255, 626665, 667095, 1378663, 1590765, 1879995, 4135989, 6893315, 20679945]

約数ペア:

[(1, 20679945), (3, 6893315), (5, 4135989), (11, 1879995), (13, 1590765), (15, 1378663), (31, 667095), (33, 626665), (39, 530255), (55, 375999), (65, 318153), (93, 222365), (143, 144615), (155, 133419), (165, 125333), (195, 106051), (311, 66495), (341, 60645), (403, 51315), (429, 48205), (465, 44473), (715, 28923), (933, 22165), (1023, 20215), (1209, 17105), (1555, 13299), (1705, 12129), (2015, 10263), (2145, 9641), (3421, 6045), (4043, 5115), (4433, 4665)]