1290400

素因数分解:

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

素因数の和:1633

約数の個数: 36

約数和(自身を含む): 3152142

約数和(自身を除く): 1861742

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 1613, 3226, 6452, 8065, 12904, 16130, 25808, 32260, 40325, 51616, 64520, 80650, 129040, 161300, 258080, 322600, 645200, 1290400]

約数ペア:

[(1, 1290400), (2, 645200), (4, 322600), (5, 258080), (8, 161300), (10, 129040), (16, 80650), (20, 64520), (25, 51616), (32, 40325), (40, 32260), (50, 25808), (80, 16130), (100, 12904), (160, 8065), (200, 6452), (400, 3226), (800, 1613)]