72720985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 95800320

約数和(自身を除く): 23079335

約数列:

[1, 5, 17, 47, 85, 109, 167, 235, 545, 799, 835, 1853, 2839, 3995, 5123, 7849, 9265, 14195, 18203, 25615, 39245, 87091, 91015, 133433, 309451, 435455, 667165, 855541, 1547255, 4277705, 14544197, 72720985]

約数ペア:

[(1, 72720985), (5, 14544197), (17, 4277705), (47, 1547255), (85, 855541), (109, 667165), (167, 435455), (235, 309451), (545, 133433), (799, 91015), (835, 87091), (1853, 39245), (2839, 25615), (3995, 18203), (5123, 14195), (7849, 9265)]