21519365

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{613}}^1$

素因数の和:701

約数の個数: 32

約数和(自身を含む): 31829760

約数和(自身を除く): 10310395

約数列:

[1, 5, 7, 17, 35, 59, 85, 119, 295, 413, 595, 613, 1003, 2065, 3065, 4291, 5015, 7021, 10421, 21455, 35105, 36167, 52105, 72947, 180835, 253169, 364735, 614839, 1265845, 3074195, 4303873, 21519365]

約数ペア:

[(1, 21519365), (5, 4303873), (7, 3074195), (17, 1265845), (35, 614839), (59, 364735), (85, 253169), (119, 180835), (295, 72947), (413, 52105), (595, 36167), (613, 35105), (1003, 21455), (2065, 10421), (3065, 7021), (4291, 5015)]