20491930

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66103}}^1$

素因数の和:66141

約数の個数: 16

約数和(自身を含む): 38075904

約数和(自身を除く): 17583974

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 66103, 132206, 330515, 661030, 2049193, 4098386, 10245965, 20491930]

約数ペア:

[(1, 20491930), (2, 10245965), (5, 4098386), (10, 2049193), (31, 661030), (62, 330515), (155, 132206), (310, 66103)]