291780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1621}}^1$

素因数の和:1636

約数の個数: 36

約数和(自身を含む): 885612

約数和(自身を除く): 593832

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1621, 3242, 4863, 6484, 8105, 9726, 14589, 16210, 19452, 24315, 29178, 32420, 48630, 58356, 72945, 97260, 145890, 291780]

約数ペア:

[(1, 291780), (2, 145890), (3, 97260), (4, 72945), (5, 58356), (6, 48630), (9, 32420), (10, 29178), (12, 24315), (15, 19452), (18, 16210), (20, 14589), (30, 9726), (36, 8105), (45, 6484), (60, 4863), (90, 3242), (180, 1621)]