81178925

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 113088000

約数和(自身を除く): 31909075

約数列:

[1, 5, 19, 25, 31, 37, 95, 149, 155, 185, 475, 589, 703, 745, 775, 925, 1147, 2831, 2945, 3515, 3725, 4619, 5513, 5735, 14155, 14725, 17575, 21793, 23095, 27565, 28675, 70775, 87761, 104747, 108965, 115475, 137825, 170903, 438805, 523735, 544825, 854515, 2194025, 2618675, 3247157, 4272575, 16235785, 81178925]

約数ペア:

[(1, 81178925), (5, 16235785), (19, 4272575), (25, 3247157), (31, 2618675), (37, 2194025), (95, 854515), (149, 544825), (155, 523735), (185, 438805), (475, 170903), (589, 137825), (703, 115475), (745, 108965), (775, 104747), (925, 87761), (1147, 70775), (2831, 28675), (2945, 27565), (3515, 23095), (3725, 21793), (4619, 17575), (5513, 14725), (5735, 14155)]