20786560

素因数分解:

$2^7\times 5^1\times {\mathrm{32479}}^1$

素因数の和:32498

約数の個数: 32

約数和(自身を含む): 49694400

約数和(自身を除く): 28907840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32479, 64958, 129916, 162395, 259832, 324790, 519664, 649580, 1039328, 1299160, 2078656, 2598320, 4157312, 5196640, 10393280, 20786560]

約数ペア:

[(1, 20786560), (2, 10393280), (4, 5196640), (5, 4157312), (8, 2598320), (10, 2078656), (16, 1299160), (20, 1039328), (32, 649580), (40, 519664), (64, 324790), (80, 259832), (128, 162395), (160, 129916), (320, 64958), (640, 32479)]