20260720

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1009}}^1$

素因数の和:1273

約数の個数: 40

約数和(自身を含む): 47340720

約数和(自身を除く): 27080000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1009, 1255, 2008, 2018, 2510, 4016, 4036, 5020, 5045, 8072, 10040, 10090, 16144, 20080, 20180, 40360, 80720, 253259, 506518, 1013036, 1266295, 2026072, 2532590, 4052144, 5065180, 10130360, 20260720]

約数ペア:

[(1, 20260720), (2, 10130360), (4, 5065180), (5, 4052144), (8, 2532590), (10, 2026072), (16, 1266295), (20, 1013036), (40, 506518), (80, 253259), (251, 80720), (502, 40360), (1004, 20180), (1009, 20080), (1255, 16144), (2008, 10090), (2018, 10040), (2510, 8072), (4016, 5045), (4036, 5020)]