20337695

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 31764960

約数和(自身を除く): 11427265

約数列:

[1, 5, 7, 17, 19, 35, 49, 85, 95, 119, 133, 245, 257, 323, 595, 665, 833, 931, 1285, 1615, 1799, 2261, 4165, 4369, 4655, 4883, 8995, 11305, 12593, 15827, 21845, 24415, 30583, 34181, 62965, 79135, 83011, 152915, 170905, 214081, 239267, 415055, 581077, 1070405, 1196335, 2905385, 4067539, 20337695]

約数ペア:

[(1, 20337695), (5, 4067539), (7, 2905385), (17, 1196335), (19, 1070405), (35, 581077), (49, 415055), (85, 239267), (95, 214081), (119, 170905), (133, 152915), (245, 83011), (257, 79135), (323, 62965), (595, 34181), (665, 30583), (833, 24415), (931, 21845), (1285, 15827), (1615, 12593), (1799, 11305), (2261, 8995), (4165, 4883), (4369, 4655)]