81807407

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 98496000

約数和(自身を除く): 16688593

約数列:

[1, 11, 19, 37, 71, 149, 209, 407, 703, 781, 1349, 1639, 2627, 2831, 5513, 7733, 10579, 14839, 28897, 31141, 49913, 60643, 104747, 116369, 201001, 391423, 549043, 1152217, 2211011, 4305653, 7437037, 81807407]

約数ペア:

[(1, 81807407), (11, 7437037), (19, 4305653), (37, 2211011), (71, 1152217), (149, 549043), (209, 391423), (407, 201001), (703, 116369), (781, 104747), (1349, 60643), (1639, 49913), (2627, 31141), (2831, 28897), (5513, 14839), (7733, 10579)]