81218000

素因数分解:

$2^4\times 5^3\times {\mathrm{40609}}^1$

素因数の和:40632

約数の個数: 40

約数和(自身を含む): 196389960

約数和(自身を除く): 115171960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 40609, 81218, 162436, 203045, 324872, 406090, 649744, 812180, 1015225, 1624360, 2030450, 3248720, 4060900, 5076125, 8121800, 10152250, 16243600, 20304500, 40609000, 81218000]

約数ペア:

[(1, 81218000), (2, 40609000), (4, 20304500), (5, 16243600), (8, 10152250), (10, 8121800), (16, 5076125), (20, 4060900), (25, 3248720), (40, 2030450), (50, 1624360), (80, 1015225), (100, 812180), (125, 649744), (200, 406090), (250, 324872), (400, 203045), (500, 162436), (1000, 81218), (2000, 40609)]