25678960

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1613}}^1$

素因数の和:1825

約数の個数: 40

約数和(自身を含む): 60040800

約数和(自身を除く): 34361840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1613, 1990, 3184, 3226, 3980, 6452, 7960, 8065, 12904, 15920, 16130, 25808, 32260, 64520, 129040, 320987, 641974, 1283948, 1604935, 2567896, 3209870, 5135792, 6419740, 12839480, 25678960]

約数ペア:

[(1, 25678960), (2, 12839480), (4, 6419740), (5, 5135792), (8, 3209870), (10, 2567896), (16, 1604935), (20, 1283948), (40, 641974), (80, 320987), (199, 129040), (398, 64520), (796, 32260), (995, 25808), (1592, 16130), (1613, 15920), (1990, 12904), (3184, 8065), (3226, 7960), (3980, 6452)]