21224920

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1811}}^1$

素因数の和:2115

約数の個数: 32

約数和(自身を含む): 47945520

約数和(自身を除く): 26720600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 1811, 2344, 2930, 3622, 5860, 7244, 9055, 11720, 14488, 18110, 36220, 72440, 530623, 1061246, 2122492, 2653115, 4244984, 5306230, 10612460, 21224920]

約数ペア:

[(1, 21224920), (2, 10612460), (4, 5306230), (5, 4244984), (8, 2653115), (10, 2122492), (20, 1061246), (40, 530623), (293, 72440), (586, 36220), (1172, 18110), (1465, 14488), (1811, 11720), (2344, 9055), (2930, 7244), (3622, 5860)]