20158856

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1231}}^1$

素因数の和:1349

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19757944

約数列:

[1, 2, 4, 8, 23, 46, 89, 92, 178, 184, 356, 712, 1231, 2047, 2462, 4094, 4924, 8188, 9848, 16376, 28313, 56626, 109559, 113252, 219118, 226504, 438236, 876472, 2519857, 5039714, 10079428, 20158856]

約数ペア:

[(1, 20158856), (2, 10079428), (4, 5039714), (8, 2519857), (23, 876472), (46, 438236), (89, 226504), (92, 219118), (178, 113252), (184, 109559), (356, 56626), (712, 28313), (1231, 16376), (2047, 9848), (2462, 8188), (4094, 4924)]