81090560

素因数分解:

$2^{11}\times 5^1\times {\mathrm{7919}}^1$

素因数の和:7946

約数の個数: 48

約数和(自身を含む): 194594400

約数和(自身を除く): 113503840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 7919, 10240, 15838, 31676, 39595, 63352, 79190, 126704, 158380, 253408, 316760, 506816, 633520, 1013632, 1267040, 2027264, 2534080, 4054528, 5068160, 8109056, 10136320, 16218112, 20272640, 40545280, 81090560]

約数ペア:

[(1, 81090560), (2, 40545280), (4, 20272640), (5, 16218112), (8, 10136320), (10, 8109056), (16, 5068160), (20, 4054528), (32, 2534080), (40, 2027264), (64, 1267040), (80, 1013632), (128, 633520), (160, 506816), (256, 316760), (320, 253408), (512, 158380), (640, 126704), (1024, 79190), (1280, 63352), (2048, 39595), (2560, 31676), (5120, 15838), (7919, 10240)]