21131704

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{547}}^1$

素因数の和:1003

約数の個数: 32

約数和(自身を含む): 43401600

約数和(自身を除く): 22269896

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 439, 547, 878, 1094, 1756, 2188, 3512, 4376, 4829, 6017, 9658, 12034, 19316, 24068, 38632, 48136, 240133, 480266, 960532, 1921064, 2641463, 5282926, 10565852, 21131704]

約数ペア:

[(1, 21131704), (2, 10565852), (4, 5282926), (8, 2641463), (11, 1921064), (22, 960532), (44, 480266), (88, 240133), (439, 48136), (547, 38632), (878, 24068), (1094, 19316), (1756, 12034), (2188, 9658), (3512, 6017), (4376, 4829)]