81991435

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 107458560

約数和(自身を除く): 25467125

約数列:

[1, 5, 23, 31, 109, 115, 155, 211, 545, 713, 1055, 2507, 3379, 3565, 4853, 6541, 12535, 16895, 22999, 24265, 32705, 77717, 114995, 150443, 388585, 528977, 712969, 752215, 2644885, 3564845, 16398287, 81991435]

約数ペア:

[(1, 81991435), (5, 16398287), (23, 3564845), (31, 2644885), (109, 752215), (115, 712969), (155, 528977), (211, 388585), (545, 150443), (713, 114995), (1055, 77717), (2507, 32705), (3379, 24265), (3565, 22999), (4853, 16895), (6541, 12535)]