19218925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4111}}^1$

素因数の和:4149

約数の個数: 24

約数和(自身を含む): 27533952

約数和(自身を除く): 8315027

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 275, 425, 935, 4111, 4675, 20555, 45221, 69887, 102775, 226105, 349435, 768757, 1130525, 1747175, 3843785, 19218925]

約数ペア:

[(1, 19218925), (5, 3843785), (11, 1747175), (17, 1130525), (25, 768757), (55, 349435), (85, 226105), (187, 102775), (275, 69887), (425, 45221), (935, 20555), (4111, 4675)]