1808680

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 4118400

約数和(自身を除く): 2309720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 439, 515, 824, 878, 1030, 1756, 2060, 2195, 3512, 4120, 4390, 8780, 17560, 45217, 90434, 180868, 226085, 361736, 452170, 904340, 1808680]

約数ペア:

[(1, 1808680), (2, 904340), (4, 452170), (5, 361736), (8, 226085), (10, 180868), (20, 90434), (40, 45217), (103, 17560), (206, 8780), (412, 4390), (439, 4120), (515, 3512), (824, 2195), (878, 2060), (1030, 1756)]