209216125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{643}}^1$

素因数の和:814

約数の個数: 32

約数和(自身を含む): 277280640

約数和(自身を除く): 68064515

約数列:

[1, 5, 19, 25, 95, 125, 137, 475, 643, 685, 2375, 2603, 3215, 3425, 12217, 13015, 16075, 17125, 61085, 65075, 80375, 88091, 305425, 325375, 440455, 1527125, 1673729, 2202275, 8368645, 11011375, 41843225, 209216125]

約数ペア:

[(1, 209216125), (5, 41843225), (19, 11011375), (25, 8368645), (95, 2202275), (125, 1673729), (137, 1527125), (475, 440455), (643, 325375), (685, 305425), (2375, 88091), (2603, 80375), (3215, 65075), (3425, 61085), (12217, 17125), (13015, 16075)]