21567768

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{20899}}^1$

素因数の和:20951

約数の個数: 32

約数和(自身を含む): 55176000

約数和(自身を除く): 33608232

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 20899, 41798, 62697, 83596, 125394, 167192, 250788, 501576, 898657, 1797314, 2695971, 3594628, 5391942, 7189256, 10783884, 21567768]

約数ペア:

[(1, 21567768), (2, 10783884), (3, 7189256), (4, 5391942), (6, 3594628), (8, 2695971), (12, 1797314), (24, 898657), (43, 501576), (86, 250788), (129, 167192), (172, 125394), (258, 83596), (344, 62697), (516, 41798), (1032, 20899)]