21121630

素因数分解:

$2^1\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{1621}}^1$

素因数の和:2931

約数の個数: 16

約数和(自身を含む): 38071584

約数和(自身を除く): 16949954

約数列:

[1, 2, 5, 10, 1303, 1621, 2606, 3242, 6515, 8105, 13030, 16210, 2112163, 4224326, 10560815, 21121630]

約数ペア:

[(1, 21121630), (2, 10560815), (5, 4224326), (10, 2112163), (1303, 16210), (1621, 13030), (2606, 8105), (3242, 6515)]