21333645

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4271}}^1$

素因数の和:4322

約数の個数: 32

約数和(自身を含む): 38960640

約数和(自身を除く): 17626995

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 111, 135, 185, 333, 555, 999, 1665, 4271, 4995, 12813, 21355, 38439, 64065, 115317, 158027, 192195, 474081, 576585, 790135, 1422243, 2370405, 4266729, 7111215, 21333645]

約数ペア:

[(1, 21333645), (3, 7111215), (5, 4266729), (9, 2370405), (15, 1422243), (27, 790135), (37, 576585), (45, 474081), (111, 192195), (135, 158027), (185, 115317), (333, 64065), (555, 38439), (999, 21355), (1665, 12813), (4271, 4995)]