40545280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{7919}}^1$

素因数の和:7944

約数の個数: 44

約数和(自身を含む): 97273440

約数和(自身を除く): 56728160

約数列:

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

約数ペア:

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