20345990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{290657}}^1$

素因数の和:290671

約数の個数: 16

約数和(自身を含む): 41854752

約数和(自身を除く): 21508762

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 290657, 581314, 1453285, 2034599, 2906570, 4069198, 10172995, 20345990]

約数ペア:

[(1, 20345990), (2, 10172995), (5, 4069198), (7, 2906570), (10, 2034599), (14, 1453285), (35, 581314), (70, 290657)]