81125955

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{11783}}^1$

素因数の和:11817

約数の個数: 40

約数和(自身を含む): 153993312

約数和(自身を除く): 72867357

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 6885, 11783, 35349, 58915, 106047, 176745, 200311, 318141, 530235, 600933, 954423, 1001555, 1590705, 1802799, 3004665, 4772115, 5408397, 9013995, 16225191, 27041985, 81125955]

約数ペア:

[(1, 81125955), (3, 27041985), (5, 16225191), (9, 9013995), (15, 5408397), (17, 4772115), (27, 3004665), (45, 1802799), (51, 1590705), (81, 1001555), (85, 954423), (135, 600933), (153, 530235), (255, 318141), (405, 200311), (459, 176745), (765, 106047), (1377, 58915), (2295, 35349), (6885, 11783)]