81257984

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{8353}}^1$

素因数の和:8390

約数の個数: 40

約数和(自身を含む): 170922840

約数和(自身を除く): 89664856

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1216, 2432, 4864, 8353, 9728, 16706, 33412, 66824, 133648, 158707, 267296, 317414, 534592, 634828, 1069184, 1269656, 2138368, 2539312, 4276736, 5078624, 10157248, 20314496, 40628992, 81257984]

約数ペア:

[(1, 81257984), (2, 40628992), (4, 20314496), (8, 10157248), (16, 5078624), (19, 4276736), (32, 2539312), (38, 2138368), (64, 1269656), (76, 1069184), (128, 634828), (152, 534592), (256, 317414), (304, 267296), (512, 158707), (608, 133648), (1216, 66824), (2432, 33412), (4864, 16706), (8353, 9728)]