81655155

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{20857}}^1$

素因数の和:20900

約数の個数: 32

約数和(自身を含む): 150177600

約数和(自身を除く): 68522445

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 20857, 62571, 104285, 187713, 312855, 563139, 604853, 938565, 1814559, 2815695, 3024265, 5443677, 9072795, 16331031, 27218385, 81655155]

約数ペア:

[(1, 81655155), (3, 27218385), (5, 16331031), (9, 9072795), (15, 5443677), (27, 3024265), (29, 2815695), (45, 1814559), (87, 938565), (135, 604853), (145, 563139), (261, 312855), (435, 187713), (783, 104285), (1305, 62571), (3915, 20857)]