20951805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5393}}^1$

素因数の和:5445

約数の個数: 32

約数和(自身を含む): 39354624

約数和(自身を除く): 18402819

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5393, 16179, 26965, 37751, 80895, 113253, 188755, 199541, 566265, 598623, 997705, 1396787, 2993115, 4190361, 6983935, 20951805]

約数ペア:

[(1, 20951805), (3, 6983935), (5, 4190361), (7, 2993115), (15, 1396787), (21, 997705), (35, 598623), (37, 566265), (105, 199541), (111, 188755), (185, 113253), (259, 80895), (555, 37751), (777, 26965), (1295, 16179), (3885, 5393)]