20551215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{971}}^1$

素因数の和:1079

約数の個数: 32

約数和(自身を含む): 35271936

約数和(自身を除く): 14720721

約数列:

[1, 3, 5, 15, 17, 51, 83, 85, 249, 255, 415, 971, 1245, 1411, 2913, 4233, 4855, 7055, 14565, 16507, 21165, 49521, 80593, 82535, 241779, 247605, 402965, 1208895, 1370081, 4110243, 6850405, 20551215]

約数ペア:

[(1, 20551215), (3, 6850405), (5, 4110243), (15, 1370081), (17, 1208895), (51, 402965), (83, 247605), (85, 241779), (249, 82535), (255, 80593), (415, 49521), (971, 21165), (1245, 16507), (1411, 14565), (2913, 7055), (4233, 4855)]