21807175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3947}}^1$

素因数の和:3987

約数の個数: 24

約数和(自身を含む): 30841776

約数和(自身を除く): 9034601

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 3947, 5525, 19735, 51311, 67099, 98675, 256555, 335495, 872287, 1282775, 1677475, 4361435, 21807175]

約数ペア:

[(1, 21807175), (5, 4361435), (13, 1677475), (17, 1282775), (25, 872287), (65, 335495), (85, 256555), (221, 98675), (325, 67099), (425, 51311), (1105, 19735), (3947, 5525)]