28080479

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:287

約数の個数: 24

約数和(自身を含む): 33981120

約数和(自身を除く): 5900641

約数列:

[1, 7, 47, 49, 89, 137, 329, 623, 959, 2303, 4183, 4361, 6439, 6713, 12193, 29281, 45073, 85351, 204967, 315511, 573071, 597457, 4011497, 28080479]

約数ペア:

[(1, 28080479), (7, 4011497), (47, 597457), (49, 573071), (89, 315511), (137, 204967), (329, 85351), (623, 45073), (959, 29281), (2303, 12193), (4183, 6713), (4361, 6439)]