81085005

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{499}}^1$

素因数の和:690

約数の個数: 48

約数和(自身を含む): 147888000

約数和(自身を除く): 66802995

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 157, 207, 345, 471, 499, 785, 1035, 1413, 1497, 2355, 2495, 3611, 4491, 7065, 7485, 10833, 11477, 18055, 22455, 32499, 34431, 54165, 57385, 78343, 103293, 162495, 172155, 235029, 391715, 516465, 705087, 1175145, 1801889, 3525435, 5405667, 9009445, 16217001, 27028335, 81085005]

約数ペア:

[(1, 81085005), (3, 27028335), (5, 16217001), (9, 9009445), (15, 5405667), (23, 3525435), (45, 1801889), (69, 1175145), (115, 705087), (157, 516465), (207, 391715), (345, 235029), (471, 172155), (499, 162495), (785, 103293), (1035, 78343), (1413, 57385), (1497, 54165), (2355, 34431), (2495, 32499), (3611, 22455), (4491, 18055), (7065, 11477), (7485, 10833)]