28030145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 11886655

約数列:

[1, 5, 11, 13, 55, 65, 143, 197, 199, 715, 985, 995, 2167, 2189, 2561, 2587, 10835, 10945, 12805, 12935, 28171, 28457, 39203, 140855, 142285, 196015, 431233, 509639, 2156165, 2548195, 5606029, 28030145]

約数ペア:

[(1, 28030145), (5, 5606029), (11, 2548195), (13, 2156165), (55, 509639), (65, 431233), (143, 196015), (197, 142285), (199, 140855), (715, 39203), (985, 28457), (995, 28171), (2167, 12935), (2189, 12805), (2561, 10945), (2587, 10835)]