21657690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{240641}}^1$

素因数の和:240654

約数の個数: 24

約数和(自身を含む): 56310228

約数和(自身を除く): 34652538

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 240641, 481282, 721923, 1203205, 1443846, 2165769, 2406410, 3609615, 4331538, 7219230, 10828845, 21657690]

約数ペア:

[(1, 21657690), (2, 10828845), (3, 7219230), (5, 4331538), (6, 3609615), (9, 2406410), (10, 2165769), (15, 1443846), (18, 1203205), (30, 721923), (45, 481282), (90, 240641)]