81543040

素因数分解:

$2^7\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1237}}^1$

素因数の和:1359

約数の個数: 64

約数和(自身を含む): 196990560

約数和(自身を除く): 115447520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 320, 412, 515, 640, 824, 1030, 1237, 1648, 2060, 2474, 3296, 4120, 4948, 6185, 6592, 8240, 9896, 12370, 13184, 16480, 19792, 24740, 32960, 39584, 49480, 65920, 79168, 98960, 127411, 158336, 197920, 254822, 395840, 509644, 637055, 791680, 1019288, 1274110, 2038576, 2548220, 4077152, 5096440, 8154304, 10192880, 16308608, 20385760, 40771520, 81543040]

約数ペア:

[(1, 81543040), (2, 40771520), (4, 20385760), (5, 16308608), (8, 10192880), (10, 8154304), (16, 5096440), (20, 4077152), (32, 2548220), (40, 2038576), (64, 1274110), (80, 1019288), (103, 791680), (128, 637055), (160, 509644), (206, 395840), (320, 254822), (412, 197920), (515, 158336), (640, 127411), (824, 98960), (1030, 79168), (1237, 65920), (1648, 49480), (2060, 39584), (2474, 32960), (3296, 24740), (4120, 19792), (4948, 16480), (6185, 13184), (6592, 12370), (8240, 9896)]