22708640

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1999}}^1$

素因数の和:2085

約数の個数: 48

約数和(自身を含む): 54432000

約数和(自身を除く): 31723360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 1999, 2272, 2840, 3998, 5680, 7996, 9995, 11360, 15992, 19990, 31984, 39980, 63968, 79960, 141929, 159920, 283858, 319840, 567716, 709645, 1135432, 1419290, 2270864, 2838580, 4541728, 5677160, 11354320, 22708640]

約数ペア:

[(1, 22708640), (2, 11354320), (4, 5677160), (5, 4541728), (8, 2838580), (10, 2270864), (16, 1419290), (20, 1135432), (32, 709645), (40, 567716), (71, 319840), (80, 283858), (142, 159920), (160, 141929), (284, 79960), (355, 63968), (568, 39980), (710, 31984), (1136, 19990), (1420, 15992), (1999, 11360), (2272, 9995), (2840, 7996), (3998, 5680)]