2007980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7723}}^1$

素因数の和:7745

約数の個数: 24

約数和(自身を含む): 4541712

約数和(自身を除く): 2533732

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 7723, 15446, 30892, 38615, 77230, 100399, 154460, 200798, 401596, 501995, 1003990, 2007980]

約数ペア:

[(1, 2007980), (2, 1003990), (4, 501995), (5, 401596), (10, 200798), (13, 154460), (20, 100399), (26, 77230), (52, 38615), (65, 30892), (130, 15446), (260, 7723)]