20847940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 46710720

約数和(自身を除く): 25862780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 332, 380, 415, 661, 830, 1322, 1577, 1660, 2644, 3154, 3305, 6308, 6610, 7885, 12559, 13220, 15770, 25118, 31540, 50236, 54863, 62795, 109726, 125590, 219452, 251180, 274315, 548630, 1042397, 1097260, 2084794, 4169588, 5211985, 10423970, 20847940]

約数ペア:

[(1, 20847940), (2, 10423970), (4, 5211985), (5, 4169588), (10, 2084794), (19, 1097260), (20, 1042397), (38, 548630), (76, 274315), (83, 251180), (95, 219452), (166, 125590), (190, 109726), (332, 62795), (380, 54863), (415, 50236), (661, 31540), (830, 25118), (1322, 15770), (1577, 13220), (1660, 12559), (2644, 7885), (3154, 6610), (3305, 6308)]