21612860

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{127}}^2$

素因数の和:330

約数の個数: 36

約数和(自身を含む): 46429992

約数和(自身を除く): 24817132

約数列:

[1, 2, 4, 5, 10, 20, 67, 127, 134, 254, 268, 335, 508, 635, 670, 1270, 1340, 2540, 8509, 16129, 17018, 32258, 34036, 42545, 64516, 80645, 85090, 161290, 170180, 322580, 1080643, 2161286, 4322572, 5403215, 10806430, 21612860]

約数ペア:

[(1, 21612860), (2, 10806430), (4, 5403215), (5, 4322572), (10, 2161286), (20, 1080643), (67, 322580), (127, 170180), (134, 161290), (254, 85090), (268, 80645), (335, 64516), (508, 42545), (635, 34036), (670, 32258), (1270, 17018), (1340, 16129), (2540, 8509)]