21135716

素因数分解:

$2^2\times 7^1\times {\mathrm{509}}^1\times {\mathrm{1483}}^1$

素因数の和:2003

約数の個数: 24

約数和(自身を含む): 42383040

約数和(自身を除く): 21247324

約数列:

[1, 2, 4, 7, 14, 28, 509, 1018, 1483, 2036, 2966, 3563, 5932, 7126, 10381, 14252, 20762, 41524, 754847, 1509694, 3019388, 5283929, 10567858, 21135716]

約数ペア:

[(1, 21135716), (2, 10567858), (4, 5283929), (7, 3019388), (14, 1509694), (28, 754847), (509, 41524), (1018, 20762), (1483, 14252), (2036, 10381), (2966, 7126), (3563, 5932)]