21676109

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 27300672

約数和(自身を除く): 5624563

約数列:

[1, 7, 13, 73, 91, 169, 251, 511, 949, 1183, 1757, 3263, 6643, 12337, 18323, 22841, 42419, 86359, 128261, 238199, 296933, 1667393, 3096587, 21676109]

約数ペア:

[(1, 21676109), (7, 3096587), (13, 1667393), (73, 296933), (91, 238199), (169, 128261), (251, 86359), (511, 42419), (949, 22841), (1183, 18323), (1757, 12337), (3263, 6643)]