81715328

素因数分解:

$2^7\times {\mathrm{17}}^2\times {\mathrm{47}}^2$

素因数の和:142

約数の個数: 72

約数和(自身を含む): 176689245

約数和(自身を除く): 94973917

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 47, 64, 68, 94, 128, 136, 188, 272, 289, 376, 544, 578, 752, 799, 1088, 1156, 1504, 1598, 2176, 2209, 2312, 3008, 3196, 4418, 4624, 6016, 6392, 8836, 9248, 12784, 13583, 17672, 18496, 25568, 27166, 35344, 36992, 37553, 51136, 54332, 70688, 75106, 102272, 108664, 141376, 150212, 217328, 282752, 300424, 434656, 600848, 638401, 869312, 1201696, 1276802, 1738624, 2403392, 2553604, 4806784, 5107208, 10214416, 20428832, 40857664, 81715328]

約数ペア:

[(1, 81715328), (2, 40857664), (4, 20428832), (8, 10214416), (16, 5107208), (17, 4806784), (32, 2553604), (34, 2403392), (47, 1738624), (64, 1276802), (68, 1201696), (94, 869312), (128, 638401), (136, 600848), (188, 434656), (272, 300424), (289, 282752), (376, 217328), (544, 150212), (578, 141376), (752, 108664), (799, 102272), (1088, 75106), (1156, 70688), (1504, 54332), (1598, 51136), (2176, 37553), (2209, 36992), (2312, 35344), (3008, 27166), (3196, 25568), (4418, 18496), (4624, 17672), (6016, 13583), (6392, 12784), (8836, 9248)]