28156505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{307}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 39118464

約数和(自身を除く): 10961959

約数列:

[1, 5, 13, 17, 65, 83, 85, 221, 307, 415, 1079, 1105, 1411, 1535, 3991, 5219, 5395, 7055, 18343, 19955, 25481, 26095, 67847, 91715, 127405, 331253, 339235, 433177, 1656265, 2165885, 5631301, 28156505]

約数ペア:

[(1, 28156505), (5, 5631301), (13, 2165885), (17, 1656265), (65, 433177), (83, 339235), (85, 331253), (221, 127405), (307, 91715), (415, 67847), (1079, 26095), (1105, 25481), (1411, 19955), (1535, 18343), (3991, 7055), (5219, 5395)]