20261990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{41351}}^1$

素因数の和:41372

約数の個数: 24

約数和(自身を含む): 42427152

約数和(自身を除く): 22165162

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 41351, 82702, 206755, 289457, 413510, 578914, 1447285, 2026199, 2894570, 4052398, 10130995, 20261990]

約数ペア:

[(1, 20261990), (2, 10130995), (5, 4052398), (7, 2894570), (10, 2026199), (14, 1447285), (35, 578914), (49, 413510), (70, 289457), (98, 206755), (245, 82702), (490, 41351)]