81973881

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{919}}^1$

素因数の和:1006

約数の個数: 48

約数和(自身を含む): 139501440

約数和(自身を除く): 57527559

約数列:

[1, 3, 9, 11, 17, 33, 51, 53, 99, 153, 159, 187, 477, 561, 583, 901, 919, 1683, 1749, 2703, 2757, 5247, 8109, 8271, 9911, 10109, 15623, 29733, 30327, 46869, 48707, 89199, 90981, 140607, 146121, 171853, 438363, 515559, 535777, 828019, 1546677, 1607331, 2484057, 4821993, 7452171, 9108209, 27324627, 81973881]

約数ペア:

[(1, 81973881), (3, 27324627), (9, 9108209), (11, 7452171), (17, 4821993), (33, 2484057), (51, 1607331), (53, 1546677), (99, 828019), (153, 535777), (159, 515559), (187, 438363), (477, 171853), (561, 146121), (583, 140607), (901, 90981), (919, 89199), (1683, 48707), (1749, 46869), (2703, 30327), (2757, 29733), (5247, 15623), (8109, 10109), (8271, 9911)]