21789776

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:459

約数の個数: 40

約数和(自身を含む): 43997184

約数和(自身を除く): 22207408

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 197, 223, 248, 394, 446, 496, 788, 892, 1576, 1784, 3152, 3568, 6107, 6913, 12214, 13826, 24428, 27652, 43931, 48856, 55304, 87862, 97712, 110608, 175724, 351448, 702896, 1361861, 2723722, 5447444, 10894888, 21789776]

約数ペア:

[(1, 21789776), (2, 10894888), (4, 5447444), (8, 2723722), (16, 1361861), (31, 702896), (62, 351448), (124, 175724), (197, 110608), (223, 97712), (248, 87862), (394, 55304), (446, 48856), (496, 43931), (788, 27652), (892, 24428), (1576, 13826), (1784, 12214), (3152, 6913), (3568, 6107)]