21123408

素因数分解:

$2^4\times 3^1\times {\mathrm{157}}^1\times {\mathrm{2803}}^1$

素因数の和:2971

約数の個数: 40

約数和(自身を含む): 54935968

約数和(自身を除く): 33812560

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 157, 314, 471, 628, 942, 1256, 1884, 2512, 2803, 3768, 5606, 7536, 8409, 11212, 16818, 22424, 33636, 44848, 67272, 134544, 440071, 880142, 1320213, 1760284, 2640426, 3520568, 5280852, 7041136, 10561704, 21123408]

約数ペア:

[(1, 21123408), (2, 10561704), (3, 7041136), (4, 5280852), (6, 3520568), (8, 2640426), (12, 1760284), (16, 1320213), (24, 880142), (48, 440071), (157, 134544), (314, 67272), (471, 44848), (628, 33636), (942, 22424), (1256, 16818), (1884, 11212), (2512, 8409), (2803, 7536), (3768, 5606)]