18709775

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 29640960

約数和(自身を除く): 10931185

約数列:

[1, 5, 7, 17, 19, 25, 35, 85, 95, 119, 133, 175, 323, 331, 425, 475, 595, 665, 1615, 1655, 2261, 2317, 2975, 3325, 5627, 6289, 8075, 8275, 11305, 11585, 28135, 31445, 39389, 44023, 56525, 57925, 106913, 140675, 157225, 196945, 220115, 534565, 748391, 984725, 1100575, 2672825, 3741955, 18709775]

約数ペア:

[(1, 18709775), (5, 3741955), (7, 2672825), (17, 1100575), (19, 984725), (25, 748391), (35, 534565), (85, 220115), (95, 196945), (119, 157225), (133, 140675), (175, 106913), (323, 57925), (331, 56525), (425, 44023), (475, 39389), (595, 31445), (665, 28135), (1615, 11585), (1655, 11305), (2261, 8275), (2317, 8075), (2975, 6289), (3325, 5627)]