20646724

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{541}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 43706880

約数和(自身を除く): 23060156

約数列:

[1, 2, 4, 7, 14, 28, 29, 47, 58, 94, 116, 188, 203, 329, 406, 541, 658, 812, 1082, 1316, 1363, 2164, 2726, 3787, 5452, 7574, 9541, 15148, 15689, 19082, 25427, 31378, 38164, 50854, 62756, 101708, 109823, 177989, 219646, 355978, 439292, 711956, 737383, 1474766, 2949532, 5161681, 10323362, 20646724]

約数ペア:

[(1, 20646724), (2, 10323362), (4, 5161681), (7, 2949532), (14, 1474766), (28, 737383), (29, 711956), (47, 439292), (58, 355978), (94, 219646), (116, 177989), (188, 109823), (203, 101708), (329, 62756), (406, 50854), (541, 38164), (658, 31378), (812, 25427), (1082, 19082), (1316, 15689), (1363, 15148), (2164, 9541), (2726, 7574), (3787, 5452)]