20543313

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51487}}^1$

素因数の和:51516

約数の個数: 16

約数和(自身を含む): 32952320

約数和(自身を除く): 12409007

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51487, 154461, 360409, 978253, 1081227, 2934759, 6847771, 20543313]

約数ペア:

[(1, 20543313), (3, 6847771), (7, 2934759), (19, 1081227), (21, 978253), (57, 360409), (133, 154461), (399, 51487)]