20537600

素因数分解:

$2^8\times 5^2\times {\mathrm{3209}}^1$

素因数の和:3235

約数の個数: 54

約数和(自身を含む): 50849610

約数和(自身を除く): 30312010

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 3209, 6400, 6418, 12836, 16045, 25672, 32090, 51344, 64180, 80225, 102688, 128360, 160450, 205376, 256720, 320900, 410752, 513440, 641800, 821504, 1026880, 1283600, 2053760, 2567200, 4107520, 5134400, 10268800, 20537600]

約数ペア:

[(1, 20537600), (2, 10268800), (4, 5134400), (5, 4107520), (8, 2567200), (10, 2053760), (16, 1283600), (20, 1026880), (25, 821504), (32, 641800), (40, 513440), (50, 410752), (64, 320900), (80, 256720), (100, 205376), (128, 160450), (160, 128360), (200, 102688), (256, 80225), (320, 64180), (400, 51344), (640, 32090), (800, 25672), (1280, 16045), (1600, 12836), (3200, 6418), (3209, 6400)]