21880551

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 37452800

約数和(自身を除く): 15572249

約数列:

[1, 3, 7, 11, 21, 33, 77, 79, 109, 121, 231, 237, 327, 363, 553, 763, 847, 869, 1199, 1659, 2289, 2541, 2607, 3597, 6083, 8393, 8611, 9559, 13189, 18249, 25179, 25833, 28677, 39567, 60277, 66913, 92323, 94721, 180831, 200739, 276969, 284163, 663047, 1041931, 1989141, 3125793, 7293517, 21880551]

約数ペア:

[(1, 21880551), (3, 7293517), (7, 3125793), (11, 1989141), (21, 1041931), (33, 663047), (77, 284163), (79, 276969), (109, 200739), (121, 180831), (231, 94721), (237, 92323), (327, 66913), (363, 60277), (553, 39567), (763, 28677), (847, 25833), (869, 25179), (1199, 18249), (1659, 13189), (2289, 9559), (2541, 8611), (2607, 8393), (3597, 6083)]