15720019

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2239}}^1$

素因数の和:2322

約数の個数: 16

約数和(自身を含む): 19353600

約数和(自身を除く): 3633581

約数列:

[1, 7, 17, 59, 119, 413, 1003, 2239, 7021, 15673, 38063, 132101, 266441, 924707, 2245717, 15720019]

約数ペア:

[(1, 15720019), (7, 2245717), (17, 924707), (59, 266441), (119, 132101), (413, 38063), (1003, 15673), (2239, 7021)]