19775205

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^2\times {\mathrm{107}}^1$

素因数の和:195

約数の個数: 48

約数和(自身を含む): 36469440

約数和(自身を除く): 16694235

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 107, 111, 135, 185, 321, 333, 535, 555, 963, 999, 1369, 1605, 1665, 2889, 3959, 4107, 4815, 4995, 6845, 11877, 12321, 14445, 19795, 20535, 35631, 36963, 59385, 61605, 106893, 146483, 178155, 184815, 439449, 534465, 732415, 1318347, 2197245, 3955041, 6591735, 19775205]

約数ペア:

[(1, 19775205), (3, 6591735), (5, 3955041), (9, 2197245), (15, 1318347), (27, 732415), (37, 534465), (45, 439449), (107, 184815), (111, 178155), (135, 146483), (185, 106893), (321, 61605), (333, 59385), (535, 36963), (555, 35631), (963, 20535), (999, 19795), (1369, 14445), (1605, 12321), (1665, 11877), (2889, 6845), (3959, 4995), (4107, 4815)]