21805065

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8501}}^1$

素因数の和:8534

約数の個数: 32

約数和(自身を含む): 40809600

約数和(自身を除く): 19004535

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8501, 25503, 42505, 76509, 127515, 161519, 229527, 382545, 484557, 807595, 1147635, 1453671, 2422785, 4361013, 7268355, 21805065]

約数ペア:

[(1, 21805065), (3, 7268355), (5, 4361013), (9, 2422785), (15, 1453671), (19, 1147635), (27, 807595), (45, 484557), (57, 382545), (95, 229527), (135, 161519), (171, 127515), (285, 76509), (513, 42505), (855, 25503), (2565, 8501)]