20512508

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{467}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 36691200

約数和(自身を除く): 16178692

約数列:

[1, 2, 4, 79, 139, 158, 278, 316, 467, 556, 934, 1868, 10981, 21962, 36893, 43924, 64913, 73786, 129826, 147572, 259652, 5128127, 10256254, 20512508]

約数ペア:

[(1, 20512508), (2, 10256254), (4, 5128127), (79, 259652), (139, 147572), (158, 129826), (278, 73786), (316, 64913), (467, 43924), (556, 36893), (934, 21962), (1868, 10981)]