21389872

素因数分解:

$2^4\times 7^2\times {\mathrm{27283}}^1$

素因数の和:27305

約数の個数: 30

約数和(自身を含む): 48210828

約数和(自身を除く): 26820956

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 27283, 54566, 109132, 190981, 218264, 381962, 436528, 763924, 1336867, 1527848, 2673734, 3055696, 5347468, 10694936, 21389872]

約数ペア:

[(1, 21389872), (2, 10694936), (4, 5347468), (7, 3055696), (8, 2673734), (14, 1527848), (16, 1336867), (28, 763924), (49, 436528), (56, 381962), (98, 218264), (112, 190981), (196, 109132), (392, 54566), (784, 27283)]