20275815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:376

約数の個数: 64

約数和(自身を含む): 40449024

約数和(自身を除く): 20173209

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 37, 51, 85, 105, 111, 119, 185, 255, 259, 307, 357, 555, 595, 629, 777, 921, 1295, 1535, 1785, 1887, 2149, 3145, 3885, 4403, 4605, 5219, 6447, 9435, 10745, 11359, 13209, 15657, 22015, 26095, 32235, 34077, 36533, 56795, 66045, 78285, 79513, 109599, 170385, 182665, 193103, 238539, 397565, 547995, 579309, 965515, 1192695, 1351721, 2896545, 4055163, 6758605, 20275815]

約数ペア:

[(1, 20275815), (3, 6758605), (5, 4055163), (7, 2896545), (15, 1351721), (17, 1192695), (21, 965515), (35, 579309), (37, 547995), (51, 397565), (85, 238539), (105, 193103), (111, 182665), (119, 170385), (185, 109599), (255, 79513), (259, 78285), (307, 66045), (357, 56795), (555, 36533), (595, 34077), (629, 32235), (777, 26095), (921, 22015), (1295, 15657), (1535, 13209), (1785, 11359), (1887, 10745), (2149, 9435), (3145, 6447), (3885, 5219), (4403, 4605)]