131171220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{728729}}^1$

素因数の和:728744

約数の個数: 36

約数和(自身を含む): 397886580

約数和(自身を除く): 266715360

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 728729, 1457458, 2186187, 2914916, 3643645, 4372374, 6558561, 7287290, 8744748, 10930935, 13117122, 14574580, 21861870, 26234244, 32792805, 43723740, 65585610, 131171220]

約数ペア:

[(1, 131171220), (2, 65585610), (3, 43723740), (4, 32792805), (5, 26234244), (6, 21861870), (9, 14574580), (10, 13117122), (12, 10930935), (15, 8744748), (18, 7287290), (20, 6558561), (30, 4372374), (36, 3643645), (45, 2914916), (60, 2186187), (90, 1457458), (180, 728729)]