21639255

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{419}}^1$

素因数の和:751

約数の個数: 32

約数和(自身を含む): 37981440

約数和(自身を除く): 16342185

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 313, 419, 939, 1257, 1565, 2095, 3443, 4609, 4695, 6285, 10329, 13827, 17215, 23045, 51645, 69135, 131147, 393441, 655735, 1442617, 1967205, 4327851, 7213085, 21639255]

約数ペア:

[(1, 21639255), (3, 7213085), (5, 4327851), (11, 1967205), (15, 1442617), (33, 655735), (55, 393441), (165, 131147), (313, 69135), (419, 51645), (939, 23045), (1257, 17215), (1565, 13827), (2095, 10329), (3443, 6285), (4609, 4695)]