21000742010

素因数分解:

$2^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{977}}^1\times {\mathrm{2657}}^1$

素因数の和:4450

約数の個数: 32

約数和(自身を含む): 37901059920

約数和(自身を除く): 16900317910

約数列:

[1, 2, 5, 10, 809, 977, 1618, 1954, 2657, 4045, 4885, 5314, 8090, 9770, 13285, 26570, 790393, 1580786, 2149513, 2595889, 3951965, 4299026, 5191778, 7903930, 10747565, 12979445, 21495130, 25958890, 2100074201, 4200148402, 10500371005, 21000742010]

約数ペア:

[(1, 21000742010), (2, 10500371005), (5, 4200148402), (10, 2100074201), (809, 25958890), (977, 21495130), (1618, 12979445), (1954, 10747565), (2657, 7903930), (4045, 5191778), (4885, 4299026), (5314, 3951965), (8090, 2595889), (9770, 2149513), (13285, 1580786), (26570, 790393)]