21731990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{44351}}^1$

素因数の和:44372

約数の個数: 24

約数和(自身を含む): 45505152

約数和(自身を除く): 23773162

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 44351, 88702, 221755, 310457, 443510, 620914, 1552285, 2173199, 3104570, 4346398, 10865995, 21731990]

約数ペア:

[(1, 21731990), (2, 10865995), (5, 4346398), (7, 3104570), (10, 2173199), (14, 1552285), (35, 620914), (49, 443510), (70, 310457), (98, 221755), (245, 88702), (490, 44351)]