28464885

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 64

約数和(自身を含む): 54604800

約数和(自身を除く): 26139915

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 79, 85, 135, 153, 157, 237, 255, 395, 459, 471, 711, 765, 785, 1185, 1343, 1413, 2133, 2295, 2355, 2669, 3555, 4029, 4239, 6715, 7065, 8007, 10665, 12087, 12403, 13345, 20145, 21195, 24021, 36261, 37209, 40035, 60435, 62015, 72063, 111627, 120105, 181305, 186045, 210851, 334881, 360315, 558135, 632553, 1054255, 1674405, 1897659, 3162765, 5692977, 9488295, 28464885]

約数ペア:

[(1, 28464885), (3, 9488295), (5, 5692977), (9, 3162765), (15, 1897659), (17, 1674405), (27, 1054255), (45, 632553), (51, 558135), (79, 360315), (85, 334881), (135, 210851), (153, 186045), (157, 181305), (237, 120105), (255, 111627), (395, 72063), (459, 62015), (471, 60435), (711, 40035), (765, 37209), (785, 36261), (1185, 24021), (1343, 21195), (1413, 20145), (2133, 13345), (2295, 12403), (2355, 12087), (2669, 10665), (3555, 8007), (4029, 7065), (4239, 6715)]