20985130

素因数分解:

$2^1\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{1613}}^1$

素因数の和:2921

約数の個数: 16

約数和(自身を含む): 37825704

約数和(自身を除く): 16840574

約数列:

[1, 2, 5, 10, 1301, 1613, 2602, 3226, 6505, 8065, 13010, 16130, 2098513, 4197026, 10492565, 20985130]

約数ペア:

[(1, 20985130), (2, 10492565), (5, 4197026), (10, 2098513), (1301, 16130), (1613, 13010), (2602, 8065), (3226, 6505)]