20981784

素因数分解:

$2^3\times 3^1\times {\mathrm{457}}^1\times {\mathrm{1913}}^1$

素因数の和:2379

約数の個数: 32

約数和(自身を含む): 52596720

約数和(自身を除く): 31614936

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 457, 914, 1371, 1828, 1913, 2742, 3656, 3826, 5484, 5739, 7652, 10968, 11478, 15304, 22956, 45912, 874241, 1748482, 2622723, 3496964, 5245446, 6993928, 10490892, 20981784]

約数ペア:

[(1, 20981784), (2, 10490892), (3, 6993928), (4, 5245446), (6, 3496964), (8, 2622723), (12, 1748482), (24, 874241), (457, 45912), (914, 22956), (1371, 15304), (1828, 11478), (1913, 10968), (2742, 7652), (3656, 5739), (3826, 5484)]