81720944

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:573

約数の個数: 40

約数和(自身を含む): 161323008

約数和(自身を除く): 79602064

約数列:

[1, 2, 4, 8, 16, 127, 131, 254, 262, 307, 508, 524, 614, 1016, 1048, 1228, 2032, 2096, 2456, 4912, 16637, 33274, 38989, 40217, 66548, 77978, 80434, 133096, 155956, 160868, 266192, 311912, 321736, 623824, 643472, 5107559, 10215118, 20430236, 40860472, 81720944]

約数ペア:

[(1, 81720944), (2, 40860472), (4, 20430236), (8, 10215118), (16, 5107559), (127, 643472), (131, 623824), (254, 321736), (262, 311912), (307, 266192), (508, 160868), (524, 155956), (614, 133096), (1016, 80434), (1048, 77978), (1228, 66548), (2032, 40217), (2096, 38989), (2456, 33274), (4912, 16637)]