81854480

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14411}}^1$

素因数の和:14495

約数の個数: 40

約数和(自身を含む): 193005504

約数和(自身を除く): 111151024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 14411, 28822, 57644, 72055, 115288, 144110, 230576, 288220, 576440, 1023181, 1152880, 2046362, 4092724, 5115905, 8185448, 10231810, 16370896, 20463620, 40927240, 81854480]

約数ペア:

[(1, 81854480), (2, 40927240), (4, 20463620), (5, 16370896), (8, 10231810), (10, 8185448), (16, 5115905), (20, 4092724), (40, 2046362), (71, 1152880), (80, 1023181), (142, 576440), (284, 288220), (355, 230576), (568, 144110), (710, 115288), (1136, 72055), (1420, 57644), (2840, 28822), (5680, 14411)]