28072005

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{401}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 48625920

約数和(自身を除く): 20553915

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 359, 401, 1077, 1203, 1795, 2005, 4667, 5213, 5385, 6015, 14001, 15639, 23335, 26065, 70005, 78195, 143959, 431877, 719795, 1871467, 2159385, 5614401, 9357335, 28072005]

約数ペア:

[(1, 28072005), (3, 9357335), (5, 5614401), (13, 2159385), (15, 1871467), (39, 719795), (65, 431877), (195, 143959), (359, 78195), (401, 70005), (1077, 26065), (1203, 23335), (1795, 15639), (2005, 14001), (4667, 6015), (5213, 5385)]