256679930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103919}}^1$

素因数の和:103958

約数の個数: 32

約数和(自身を含む): 523756800

約数和(自身を除く): 267076870

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 103919, 207838, 519595, 1039190, 1350947, 1974461, 2701894, 3948922, 6754735, 9872305, 13509470, 19744610, 25667993, 51335986, 128339965, 256679930]

約数ペア:

[(1, 256679930), (2, 128339965), (5, 51335986), (10, 25667993), (13, 19744610), (19, 13509470), (26, 9872305), (38, 6754735), (65, 3948922), (95, 2701894), (130, 1974461), (190, 1350947), (247, 1039190), (494, 519595), (1235, 207838), (2470, 103919)]