21008128

素因数分解:

$2^8\times {\mathrm{137}}^1\times {\mathrm{599}}^1$

素因数の和:752

約数の個数: 36

約数和(自身を含む): 42310800

約数和(自身を除く): 21302672

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 137, 256, 274, 548, 599, 1096, 1198, 2192, 2396, 4384, 4792, 8768, 9584, 17536, 19168, 35072, 38336, 76672, 82063, 153344, 164126, 328252, 656504, 1313008, 2626016, 5252032, 10504064, 21008128]

約数ペア:

[(1, 21008128), (2, 10504064), (4, 5252032), (8, 2626016), (16, 1313008), (32, 656504), (64, 328252), (128, 164126), (137, 153344), (256, 82063), (274, 76672), (548, 38336), (599, 35072), (1096, 19168), (1198, 17536), (2192, 9584), (2396, 8768), (4384, 4792)]