90380000

素因数分解:

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

素因数の和:4549

約数の個数: 60

約数和(自身を含む): 222397560

約数和(自身を除く): 132017560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 4000, 4519, 5000, 9038, 10000, 18076, 20000, 22595, 36152, 45190, 72304, 90380, 112975, 144608, 180760, 225950, 361520, 451900, 564875, 723040, 903800, 1129750, 1807600, 2259500, 2824375, 3615200, 4519000, 5648750, 9038000, 11297500, 18076000, 22595000, 45190000, 90380000]

約数ペア:

[(1, 90380000), (2, 45190000), (4, 22595000), (5, 18076000), (8, 11297500), (10, 9038000), (16, 5648750), (20, 4519000), (25, 3615200), (32, 2824375), (40, 2259500), (50, 1807600), (80, 1129750), (100, 903800), (125, 723040), (160, 564875), (200, 451900), (250, 361520), (400, 225950), (500, 180760), (625, 144608), (800, 112975), (1000, 90380), (1250, 72304), (2000, 45190), (2500, 36152), (4000, 22595), (4519, 20000), (5000, 18076), (9038, 10000)]