21409640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76463}}^1$

素因数の和:76481

約数の個数: 32

約数和(自身を含む): 55054080

約数和(自身を除く): 33644440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76463, 152926, 305852, 382315, 535241, 611704, 764630, 1070482, 1529260, 2140964, 2676205, 3058520, 4281928, 5352410, 10704820, 21409640]

約数ペア:

[(1, 21409640), (2, 10704820), (4, 5352410), (5, 4281928), (7, 3058520), (8, 2676205), (10, 2140964), (14, 1529260), (20, 1070482), (28, 764630), (35, 611704), (40, 535241), (56, 382315), (70, 305852), (140, 152926), (280, 76463)]