81551393

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{619}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 107136000

約数和(自身を除く): 25584607

約数列:

[1, 7, 11, 29, 59, 77, 203, 319, 413, 619, 649, 1711, 2233, 4333, 4543, 6809, 11977, 17951, 18821, 36521, 47663, 125657, 131747, 197461, 255647, 401731, 1059109, 1382227, 2812117, 7413763, 11650199, 81551393]

約数ペア:

[(1, 81551393), (7, 11650199), (11, 7413763), (29, 2812117), (59, 1382227), (77, 1059109), (203, 401731), (319, 255647), (413, 197461), (619, 131747), (649, 125657), (1711, 47663), (2233, 36521), (4333, 18821), (4543, 17951), (6809, 11977)]