21862225

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 34747776

約数和(自身を除く): 12885551

約数列:

[1, 5, 7, 11, 25, 35, 41, 55, 77, 175, 205, 275, 277, 287, 385, 451, 1025, 1385, 1435, 1925, 1939, 2255, 3047, 3157, 6925, 7175, 9695, 11275, 11357, 15235, 15785, 21329, 48475, 56785, 76175, 78925, 79499, 106645, 124927, 283925, 397495, 533225, 624635, 874489, 1987475, 3123175, 4372445, 21862225]

約数ペア:

[(1, 21862225), (5, 4372445), (7, 3123175), (11, 1987475), (25, 874489), (35, 624635), (41, 533225), (55, 397495), (77, 283925), (175, 124927), (205, 106645), (275, 79499), (277, 78925), (287, 76175), (385, 56785), (451, 48475), (1025, 21329), (1385, 15785), (1435, 15235), (1925, 11357), (1939, 11275), (2255, 9695), (3047, 7175), (3157, 6925)]