81512875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{431}}^1$

素因数の和:552

約数の個数: 32

約数和(自身を含む): 109175040

約数和(自身を除く): 27662165

約数列:

[1, 5, 17, 25, 85, 89, 125, 425, 431, 445, 1513, 2125, 2155, 2225, 7327, 7565, 10775, 11125, 36635, 37825, 38359, 53875, 183175, 189125, 191795, 652103, 915875, 958975, 3260515, 4794875, 16302575, 81512875]

約数ペア:

[(1, 81512875), (5, 16302575), (17, 4794875), (25, 3260515), (85, 958975), (89, 915875), (125, 652103), (425, 191795), (431, 189125), (445, 183175), (1513, 53875), (2125, 38359), (2155, 37825), (2225, 36635), (7327, 11125), (7565, 10775)]