28990005

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{7639}}^1$

素因数の和:7681

約数の個数: 32

約数和(自身を含む): 52807680

約数和(自身を除く): 23817675

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 7639, 22917, 38195, 84029, 114585, 175697, 252087, 420145, 527091, 878485, 1260435, 1932667, 2635455, 5798001, 9663335, 28990005]

約数ペア:

[(1, 28990005), (3, 9663335), (5, 5798001), (11, 2635455), (15, 1932667), (23, 1260435), (33, 878485), (55, 527091), (69, 420145), (115, 252087), (165, 175697), (253, 114585), (345, 84029), (759, 38195), (1265, 22917), (3795, 7639)]