18319581

素因数分解:

$3^3\times 7^2\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 32230080

約数和(自身を除く): 13910499

約数列:

[1, 3, 7, 9, 21, 27, 49, 61, 63, 147, 183, 189, 227, 427, 441, 549, 681, 1281, 1323, 1589, 1647, 2043, 2989, 3843, 4767, 6129, 8967, 11123, 11529, 13847, 14301, 26901, 33369, 41541, 42903, 80703, 96929, 100107, 124623, 290787, 300321, 373869, 678503, 872361, 2035509, 2617083, 6106527, 18319581]

約数ペア:

[(1, 18319581), (3, 6106527), (7, 2617083), (9, 2035509), (21, 872361), (27, 678503), (49, 373869), (61, 300321), (63, 290787), (147, 124623), (183, 100107), (189, 96929), (227, 80703), (427, 42903), (441, 41541), (549, 33369), (681, 26901), (1281, 14301), (1323, 13847), (1589, 11529), (1647, 11123), (2043, 8967), (2989, 6129), (3843, 4767)]