19745016824

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{440501}}^1$

素因数の和:440951

約数の個数: 32

約数和(自身を含む): 39962341440

約数和(自身を除く): 20217324616

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 431, 862, 1724, 3448, 5603, 11206, 22412, 44824, 440501, 881002, 1762004, 3524008, 5726513, 11453026, 22906052, 45812104, 189855931, 379711862, 759423724, 1518847448, 2468127103, 4936254206, 9872508412, 19745016824]

約数ペア:

[(1, 19745016824), (2, 9872508412), (4, 4936254206), (8, 2468127103), (13, 1518847448), (26, 759423724), (52, 379711862), (104, 189855931), (431, 45812104), (862, 22906052), (1724, 11453026), (3448, 5726513), (5603, 3524008), (11206, 1762004), (22412, 881002), (44824, 440501)]