1625587840

素因数分解:

$2^7\times 5^1\times {\mathrm{2539981}}^1$

素因数の和:2540000

約数の個数: 32

約数和(自身を含む): 3886172460

約数和(自身を除く): 2260584620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 2539981, 5079962, 10159924, 12699905, 20319848, 25399810, 40639696, 50799620, 81279392, 101599240, 162558784, 203198480, 325117568, 406396960, 812793920, 1625587840]

約数ペア:

[(1, 1625587840), (2, 812793920), (4, 406396960), (5, 325117568), (8, 203198480), (10, 162558784), (16, 101599240), (20, 81279392), (32, 50799620), (40, 40639696), (64, 25399810), (80, 20319848), (128, 12699905), (160, 10159924), (320, 5079962), (640, 2539981)]