21686763

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4759}}^1$

素因数の和:4807

約数の個数: 24

約数和(自身を含む): 34728960

約数和(自身を除く): 13042197

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 4759, 14277, 33313, 99939, 147529, 233191, 442587, 699573, 1032703, 3098109, 7228921, 21686763]

約数ペア:

[(1, 21686763), (3, 7228921), (7, 3098109), (21, 1032703), (31, 699573), (49, 442587), (93, 233191), (147, 147529), (217, 99939), (651, 33313), (1519, 14277), (4557, 4759)]