78721175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{131}}^1$

素因数の和:240

約数の個数: 36

約数和(自身を含む): 108446184

約数和(自身を除く): 29725009

約数列:

[1, 5, 13, 25, 43, 65, 131, 215, 325, 559, 655, 1075, 1703, 1849, 2795, 3275, 5633, 8515, 9245, 13975, 24037, 28165, 42575, 46225, 73229, 120185, 140825, 242219, 366145, 600925, 1211095, 1830725, 3148847, 6055475, 15744235, 78721175]

約数ペア:

[(1, 78721175), (5, 15744235), (13, 6055475), (25, 3148847), (43, 1830725), (65, 1211095), (131, 600925), (215, 366145), (325, 242219), (559, 140825), (655, 120185), (1075, 73229), (1703, 46225), (1849, 42575), (2795, 28165), (3275, 24037), (5633, 13975), (8515, 9245)]