20973260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13619}}^1$

素因数の和:13646

約数の個数: 48

約数和(自身を含む): 54915840

約数和(自身を除く): 33942580

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13619, 27238, 54476, 68095, 95333, 136190, 149809, 190666, 272380, 299618, 381332, 476665, 599236, 749045, 953330, 1048663, 1498090, 1906660, 2097326, 2996180, 4194652, 5243315, 10486630, 20973260]

約数ペア:

[(1, 20973260), (2, 10486630), (4, 5243315), (5, 4194652), (7, 2996180), (10, 2097326), (11, 1906660), (14, 1498090), (20, 1048663), (22, 953330), (28, 749045), (35, 599236), (44, 476665), (55, 381332), (70, 299618), (77, 272380), (110, 190666), (140, 149809), (154, 136190), (220, 95333), (308, 68095), (385, 54476), (770, 27238), (1540, 13619)]