51245440

素因数分解:

$2^7\times 5^1\times {\mathrm{80071}}^1$

素因数の和:80090

約数の個数: 32

約数和(自身を含む): 122510160

約数和(自身を除く): 71264720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 80071, 160142, 320284, 400355, 640568, 800710, 1281136, 1601420, 2562272, 3202840, 5124544, 6405680, 10249088, 12811360, 25622720, 51245440]

約数ペア:

[(1, 51245440), (2, 25622720), (4, 12811360), (5, 10249088), (8, 6405680), (10, 5124544), (16, 3202840), (20, 2562272), (32, 1601420), (40, 1281136), (64, 800710), (80, 640568), (128, 400355), (160, 320284), (320, 160142), (640, 80071)]