20315085

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{599}}^1$

素因数の和:650

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 21156915

約数列:

[1, 3, 5, 7, 15, 17, 19, 21, 35, 51, 57, 85, 95, 105, 119, 133, 255, 285, 323, 357, 399, 595, 599, 665, 969, 1615, 1785, 1797, 1995, 2261, 2995, 4193, 4845, 6783, 8985, 10183, 11305, 11381, 12579, 20965, 30549, 33915, 34143, 50915, 56905, 62895, 71281, 79667, 152745, 170715, 193477, 213843, 239001, 356405, 398335, 580431, 967385, 1069215, 1195005, 1354339, 2902155, 4063017, 6771695, 20315085]

約数ペア:

[(1, 20315085), (3, 6771695), (5, 4063017), (7, 2902155), (15, 1354339), (17, 1195005), (19, 1069215), (21, 967385), (35, 580431), (51, 398335), (57, 356405), (85, 239001), (95, 213843), (105, 193477), (119, 170715), (133, 152745), (255, 79667), (285, 71281), (323, 62895), (357, 56905), (399, 50915), (595, 34143), (599, 33915), (665, 30549), (969, 20965), (1615, 12579), (1785, 11381), (1797, 11305), (1995, 10183), (2261, 8985), (2995, 6783), (4193, 4845)]