28815200

素因数分解:

$2^5\times 5^2\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:400

約数の個数: 72

約数和(自身を含む): 71089200

約数和(自身を除く): 42274000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 181, 199, 200, 362, 398, 400, 724, 796, 800, 905, 995, 1448, 1592, 1810, 1990, 2896, 3184, 3620, 3980, 4525, 4975, 5792, 6368, 7240, 7960, 9050, 9950, 14480, 15920, 18100, 19900, 28960, 31840, 36019, 36200, 39800, 72038, 72400, 79600, 144076, 144800, 159200, 180095, 288152, 360190, 576304, 720380, 900475, 1152608, 1440760, 1800950, 2881520, 3601900, 5763040, 7203800, 14407600, 28815200]

約数ペア:

[(1, 28815200), (2, 14407600), (4, 7203800), (5, 5763040), (8, 3601900), (10, 2881520), (16, 1800950), (20, 1440760), (25, 1152608), (32, 900475), (40, 720380), (50, 576304), (80, 360190), (100, 288152), (160, 180095), (181, 159200), (199, 144800), (200, 144076), (362, 79600), (398, 72400), (400, 72038), (724, 39800), (796, 36200), (800, 36019), (905, 31840), (995, 28960), (1448, 19900), (1592, 18100), (1810, 15920), (1990, 14480), (2896, 9950), (3184, 9050), (3620, 7960), (3980, 7240), (4525, 6368), (4975, 5792)]