16218425

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1231}}^1$

素因数の和:1289

約数の個数: 24

約数和(自身を含む): 21998592

約数和(自身を除く): 5780167

約数列:

[1, 5, 17, 25, 31, 85, 155, 425, 527, 775, 1231, 2635, 6155, 13175, 20927, 30775, 38161, 104635, 190805, 523175, 648737, 954025, 3243685, 16218425]

約数ペア:

[(1, 16218425), (5, 3243685), (17, 954025), (25, 648737), (31, 523175), (85, 190805), (155, 104635), (425, 38161), (527, 30775), (775, 20927), (1231, 13175), (2635, 6155)]