90741520

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{4519}}^1$

素因数の和:4783

約数の個数: 40

約数和(自身を含む): 211861440

約数和(自身を除く): 121119920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 2008, 2510, 4016, 4519, 5020, 9038, 10040, 18076, 20080, 22595, 36152, 45190, 72304, 90380, 180760, 361520, 1134269, 2268538, 4537076, 5671345, 9074152, 11342690, 18148304, 22685380, 45370760, 90741520]

約数ペア:

[(1, 90741520), (2, 45370760), (4, 22685380), (5, 18148304), (8, 11342690), (10, 9074152), (16, 5671345), (20, 4537076), (40, 2268538), (80, 1134269), (251, 361520), (502, 180760), (1004, 90380), (1255, 72304), (2008, 45190), (2510, 36152), (4016, 22595), (4519, 20080), (5020, 18076), (9038, 10040)]