81710820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{453949}}^1$

素因数の和:453964

約数の個数: 36

約数和(自身を含む): 247856700

約数和(自身を除く): 166145880

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 453949, 907898, 1361847, 1815796, 2269745, 2723694, 4085541, 4539490, 5447388, 6809235, 8171082, 9078980, 13618470, 16342164, 20427705, 27236940, 40855410, 81710820]

約数ペア:

[(1, 81710820), (2, 40855410), (3, 27236940), (4, 20427705), (5, 16342164), (6, 13618470), (9, 9078980), (10, 8171082), (12, 6809235), (15, 5447388), (18, 4539490), (20, 4085541), (30, 2723694), (36, 2269745), (45, 1815796), (60, 1361847), (90, 907898), (180, 453949)]