256789600

素因数分解:

$2^5\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1613}}^1$

素因数の和:1832

約数の個数: 72

約数和(自身を含む): 630428400

約数和(自身を除く): 373638800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 199, 200, 398, 400, 796, 800, 995, 1592, 1613, 1990, 3184, 3226, 3980, 4975, 6368, 6452, 7960, 8065, 9950, 12904, 15920, 16130, 19900, 25808, 31840, 32260, 39800, 40325, 51616, 64520, 79600, 80650, 129040, 159200, 161300, 258080, 320987, 322600, 641974, 645200, 1283948, 1290400, 1604935, 2567896, 3209870, 5135792, 6419740, 8024675, 10271584, 12839480, 16049350, 25678960, 32098700, 51357920, 64197400, 128394800, 256789600]

約数ペア:

[(1, 256789600), (2, 128394800), (4, 64197400), (5, 51357920), (8, 32098700), (10, 25678960), (16, 16049350), (20, 12839480), (25, 10271584), (32, 8024675), (40, 6419740), (50, 5135792), (80, 3209870), (100, 2567896), (160, 1604935), (199, 1290400), (200, 1283948), (398, 645200), (400, 641974), (796, 322600), (800, 320987), (995, 258080), (1592, 161300), (1613, 159200), (1990, 129040), (3184, 80650), (3226, 79600), (3980, 64520), (4975, 51616), (6368, 40325), (6452, 39800), (7960, 32260), (8065, 31840), (9950, 25808), (12904, 19900), (15920, 16130)]