21650013040

素因数分解:

$2^4\times 5^1\times {\mathrm{270625163}}^1$

素因数の和:270625176

約数の個数: 20

約数和(自身を含む): 50336280504

約数和(自身を除く): 28686267464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270625163, 541250326, 1082500652, 1353125815, 2165001304, 2706251630, 4330002608, 5412503260, 10825006520, 21650013040]

約数ペア:

[(1, 21650013040), (2, 10825006520), (4, 5412503260), (5, 4330002608), (8, 2706251630), (10, 2165001304), (16, 1353125815), (20, 1082500652), (40, 541250326), (80, 270625163)]