18842355

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 38830080

約数和(自身を除く): 19987725

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 127, 135, 157, 189, 315, 381, 471, 635, 785, 889, 945, 1099, 1143, 1413, 1905, 2355, 2667, 3297, 3429, 4239, 4445, 5495, 5715, 7065, 8001, 9891, 13335, 16485, 17145, 19939, 21195, 24003, 29673, 40005, 49455, 59817, 99695, 120015, 139573, 148365, 179451, 299085, 418719, 538353, 697865, 897255, 1256157, 2093595, 2691765, 3768471, 6280785, 18842355]

約数ペア:

[(1, 18842355), (3, 6280785), (5, 3768471), (7, 2691765), (9, 2093595), (15, 1256157), (21, 897255), (27, 697865), (35, 538353), (45, 418719), (63, 299085), (105, 179451), (127, 148365), (135, 139573), (157, 120015), (189, 99695), (315, 59817), (381, 49455), (471, 40005), (635, 29673), (785, 24003), (889, 21195), (945, 19939), (1099, 17145), (1143, 16485), (1413, 13335), (1905, 9891), (2355, 8001), (2667, 7065), (3297, 5715), (3429, 5495), (4239, 4445)]