22720775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:105

約数の個数: 72

約数和(自身を含む): 37601760

約数和(自身を除く): 14880985

約数列:

[1, 5, 7, 11, 25, 29, 35, 37, 55, 77, 121, 145, 175, 185, 203, 259, 275, 319, 385, 407, 605, 725, 847, 925, 1015, 1073, 1295, 1595, 1925, 2035, 2233, 2849, 3025, 3509, 4235, 4477, 5075, 5365, 6475, 7511, 7975, 10175, 11165, 11803, 14245, 17545, 21175, 22385, 24563, 26825, 31339, 37555, 55825, 59015, 71225, 82621, 87725, 111925, 122815, 129833, 156695, 187775, 295075, 413105, 614075, 649165, 783475, 908831, 2065525, 3245825, 4544155, 22720775]

約数ペア:

[(1, 22720775), (5, 4544155), (7, 3245825), (11, 2065525), (25, 908831), (29, 783475), (35, 649165), (37, 614075), (55, 413105), (77, 295075), (121, 187775), (145, 156695), (175, 129833), (185, 122815), (203, 111925), (259, 87725), (275, 82621), (319, 71225), (385, 59015), (407, 55825), (605, 37555), (725, 31339), (847, 26825), (925, 24563), (1015, 22385), (1073, 21175), (1295, 17545), (1595, 14245), (1925, 11803), (2035, 11165), (2233, 10175), (2849, 7975), (3025, 7511), (3509, 6475), (4235, 5365), (4477, 5075)]