21990168

素因数分解:

$2^3\times 3^2\times {\mathrm{305419}}^1$

素因数の和:305431

約数の個数: 24

約数和(自身を含む): 59556900

約数和(自身を除く): 37566732

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 305419, 610838, 916257, 1221676, 1832514, 2443352, 2748771, 3665028, 5497542, 7330056, 10995084, 21990168]

約数ペア:

[(1, 21990168), (2, 10995084), (3, 7330056), (4, 5497542), (6, 3665028), (8, 2748771), (9, 2443352), (12, 1832514), (18, 1221676), (24, 916257), (36, 610838), (72, 305419)]