2561065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1$

素因数の和:121

約数の個数: 24

約数和(自身を含む): 3503304

約数和(自身を除く): 942239

約数列:

[1, 5, 13, 31, 41, 65, 155, 205, 403, 533, 961, 1271, 2015, 2665, 4805, 6355, 12493, 16523, 39401, 62465, 82615, 197005, 512213, 2561065]

約数ペア:

[(1, 2561065), (5, 512213), (13, 197005), (31, 82615), (41, 62465), (65, 39401), (155, 16523), (205, 12493), (403, 6355), (533, 4805), (961, 2665), (1271, 2015)]