18980491784

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{431}}^1\times {\mathrm{134263}}^1$

素因数の和:134741

約数の個数: 32

約数和(自身を含む): 36541290240

約数和(自身を除く): 17560798456

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 431, 862, 1724, 3448, 17671, 35342, 70684, 134263, 141368, 268526, 537052, 1074104, 5504783, 11009566, 22019132, 44038264, 57867353, 115734706, 231469412, 462938824, 2372561473, 4745122946, 9490245892, 18980491784]

約数ペア:

[(1, 18980491784), (2, 9490245892), (4, 4745122946), (8, 2372561473), (41, 462938824), (82, 231469412), (164, 115734706), (328, 57867353), (431, 44038264), (862, 22019132), (1724, 11009566), (3448, 5504783), (17671, 1074104), (35342, 537052), (70684, 268526), (134263, 141368)]