19603960

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1907}}^1$

素因数の和:2175

約数の個数: 32

約数和(自身を含む): 44303760

約数和(自身を除く): 24699800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1907, 2056, 2570, 3814, 5140, 7628, 9535, 10280, 15256, 19070, 38140, 76280, 490099, 980198, 1960396, 2450495, 3920792, 4900990, 9801980, 19603960]

約数ペア:

[(1, 19603960), (2, 9801980), (4, 4900990), (5, 3920792), (8, 2450495), (10, 1960396), (20, 980198), (40, 490099), (257, 76280), (514, 38140), (1028, 19070), (1285, 15256), (1907, 10280), (2056, 9535), (2570, 7628), (3814, 5140)]