20938045408

素因数分解:

$2^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1316527}}^1$

素因数の和:1316615

約数の個数: 48

約数和(自身を含む): 47774168064

約数和(自身を除く): 26836122656

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 71, 112, 142, 224, 284, 497, 568, 994, 1136, 1988, 2272, 3976, 7952, 15904, 1316527, 2633054, 5266108, 9215689, 10532216, 18431378, 21064432, 36862756, 42128864, 73725512, 93473417, 147451024, 186946834, 294902048, 373893668, 654313919, 747787336, 1308627838, 1495574672, 2617255676, 2991149344, 5234511352, 10469022704, 20938045408]

約数ペア:

[(1, 20938045408), (2, 10469022704), (4, 5234511352), (7, 2991149344), (8, 2617255676), (14, 1495574672), (16, 1308627838), (28, 747787336), (32, 654313919), (56, 373893668), (71, 294902048), (112, 186946834), (142, 147451024), (224, 93473417), (284, 73725512), (497, 42128864), (568, 36862756), (994, 21064432), (1136, 18431378), (1988, 10532216), (2272, 9215689), (3976, 5266108), (7952, 2633054), (15904, 1316527)]