19429888

素因数分解:

$2^9\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:432

約数の個数: 40

約数和(自身を含む): 39246372

約数和(自身を除く): 19816484

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 137, 256, 274, 277, 512, 548, 554, 1096, 1108, 2192, 2216, 4384, 4432, 8768, 8864, 17536, 17728, 35072, 35456, 37949, 70144, 70912, 75898, 141824, 151796, 303592, 607184, 1214368, 2428736, 4857472, 9714944, 19429888]

約数ペア:

[(1, 19429888), (2, 9714944), (4, 4857472), (8, 2428736), (16, 1214368), (32, 607184), (64, 303592), (128, 151796), (137, 141824), (256, 75898), (274, 70912), (277, 70144), (512, 37949), (548, 35456), (554, 35072), (1096, 17728), (1108, 17536), (2192, 8864), (2216, 8768), (4384, 4432)]