20578080256

素因数分解:

$2^9\times {\mathrm{127}}^1\times {\mathrm{316469}}^1$

素因数の和:316614

約数の個数: 40

約数和(自身を含む): 41439847680

約数和(自身を除く): 20861767424

約数列:

[1, 2, 4, 8, 16, 32, 64, 127, 128, 254, 256, 508, 512, 1016, 2032, 4064, 8128, 16256, 32512, 65024, 316469, 632938, 1265876, 2531752, 5063504, 10127008, 20254016, 40191563, 40508032, 80383126, 81016064, 160766252, 162032128, 321532504, 643065008, 1286130016, 2572260032, 5144520064, 10289040128, 20578080256]

約数ペア:

[(1, 20578080256), (2, 10289040128), (4, 5144520064), (8, 2572260032), (16, 1286130016), (32, 643065008), (64, 321532504), (127, 162032128), (128, 160766252), (254, 81016064), (256, 80383126), (508, 40508032), (512, 40191563), (1016, 20254016), (2032, 10127008), (4064, 5063504), (8128, 2531752), (16256, 1265876), (32512, 632938), (65024, 316469)]