20427836

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 22246852

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 71, 142, 143, 284, 286, 503, 572, 781, 923, 1006, 1562, 1846, 2012, 3124, 3692, 5533, 6539, 10153, 11066, 13078, 20306, 22132, 26156, 35713, 40612, 71426, 71929, 142852, 143858, 287716, 392843, 464269, 785686, 928538, 1571372, 1857076, 5106959, 10213918, 20427836]

約数ペア:

[(1, 20427836), (2, 10213918), (4, 5106959), (11, 1857076), (13, 1571372), (22, 928538), (26, 785686), (44, 464269), (52, 392843), (71, 287716), (142, 143858), (143, 142852), (284, 71929), (286, 71426), (503, 40612), (572, 35713), (781, 26156), (923, 22132), (1006, 20306), (1562, 13078), (1846, 11066), (2012, 10153), (3124, 6539), (3692, 5533)]