217427678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{1889}}^1$

素因数の和:2156

約数の個数: 32

約数和(自身を含む): 371498400

約数和(自身を除く): 154070722

約数列:

[1, 2, 13, 19, 26, 38, 233, 247, 466, 494, 1889, 3029, 3778, 4427, 6058, 8854, 24557, 35891, 49114, 57551, 71782, 115102, 440137, 466583, 880274, 933166, 5721781, 8362603, 11443562, 16725206, 108713839, 217427678]

約数ペア:

[(1, 217427678), (2, 108713839), (13, 16725206), (19, 11443562), (26, 8362603), (38, 5721781), (233, 933166), (247, 880274), (466, 466583), (494, 440137), (1889, 115102), (3029, 71782), (3778, 57551), (4427, 49114), (6058, 35891), (8854, 24557)]