21092972

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:845

約数の個数: 24

約数和(自身を含む): 37867200

約数和(自身を除く): 16774228

約数列:

[1, 2, 4, 59, 118, 139, 236, 278, 556, 643, 1286, 2572, 8201, 16402, 32804, 37937, 75874, 89377, 151748, 178754, 357508, 5273243, 10546486, 21092972]

約数ペア:

[(1, 21092972), (2, 10546486), (4, 5273243), (59, 357508), (118, 178754), (139, 151748), (236, 89377), (278, 75874), (556, 37937), (643, 32804), (1286, 16402), (2572, 8201)]