19779925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4231}}^1$

素因数の和:4269

約数の個数: 24

約数和(自身を含む): 28337472

約数和(自身を除く): 8557547

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 275, 425, 935, 4231, 4675, 21155, 46541, 71927, 105775, 232705, 359635, 791197, 1163525, 1798175, 3955985, 19779925]

約数ペア:

[(1, 19779925), (5, 3955985), (11, 1798175), (17, 1163525), (25, 791197), (55, 359635), (85, 232705), (187, 105775), (275, 71927), (425, 46541), (935, 21155), (4231, 4675)]