20139470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 21228850

約数列:

[1, 2, 5, 10, 13, 26, 37, 53, 65, 74, 79, 106, 130, 158, 185, 265, 370, 395, 481, 530, 689, 790, 962, 1027, 1378, 1961, 2054, 2405, 2923, 3445, 3922, 4187, 4810, 5135, 5846, 6890, 8374, 9805, 10270, 14615, 19610, 20935, 25493, 29230, 37999, 41870, 50986, 54431, 75998, 108862, 127465, 154919, 189995, 254930, 272155, 309838, 379990, 544310, 774595, 1549190, 2013947, 4027894, 10069735, 20139470]

約数ペア:

[(1, 20139470), (2, 10069735), (5, 4027894), (10, 2013947), (13, 1549190), (26, 774595), (37, 544310), (53, 379990), (65, 309838), (74, 272155), (79, 254930), (106, 189995), (130, 154919), (158, 127465), (185, 108862), (265, 75998), (370, 54431), (395, 50986), (481, 41870), (530, 37999), (689, 29230), (790, 25493), (962, 20935), (1027, 19610), (1378, 14615), (1961, 10270), (2054, 9805), (2405, 8374), (2923, 6890), (3445, 5846), (3922, 5135), (4187, 4810)]