9987891.00000000

素因数分解:

$2^9\times {\mathrm{67}}^1\times {\mathrm{313}}^1$

素因数の和:398

約数の個数: 40

約数和(自身を含む): 21843096

約数和(自身を除く): 11105944

約数列:

[1, 2, 4, 8, 16, 32, 64, 67, 128, 134, 256, 268, 313, 512, 536, 626, 1072, 1252, 2144, 2504, 4288, 5008, 8576, 10016, 17152, 20032, 20971, 34304, 40064, 41942, 80128, 83884, 160256, 167768, 335536, 671072, 1342144, 2684288, 5368576, 10737152]

約数ペア:

[(1, 10737152), (2, 5368576), (4, 2684288), (8, 1342144), (16, 671072), (32, 335536), (64, 167768), (67, 160256), (128, 83884), (134, 80128), (256, 41942), (268, 40064), (313, 34304), (512, 20971), (536, 20032), (626, 17152), (1072, 10016), (1252, 8576), (2144, 5008), (2504, 4288)]