20132979880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2037751}}^1$

素因数の和:2037794

約数の個数: 64

約数和(自身を含む): 51351350400

約数和(自身を除く): 31218370520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 9880, 2037751, 4075502, 8151004, 10188755, 16302008, 20377510, 26490763, 38717269, 40755020, 52981526, 77434538, 81510040, 105963052, 132453815, 154869076, 193586345, 211926104, 264907630, 309738152, 387172690, 503324497, 529815260, 774345380, 1006648994, 1059630520, 1548690760, 2013297988, 2516622485, 4026595976, 5033244970, 10066489940, 20132979880]

約数ペア:

[(1, 20132979880), (2, 10066489940), (4, 5033244970), (5, 4026595976), (8, 2516622485), (10, 2013297988), (13, 1548690760), (19, 1059630520), (20, 1006648994), (26, 774345380), (38, 529815260), (40, 503324497), (52, 387172690), (65, 309738152), (76, 264907630), (95, 211926104), (104, 193586345), (130, 154869076), (152, 132453815), (190, 105963052), (247, 81510040), (260, 77434538), (380, 52981526), (494, 40755020), (520, 38717269), (760, 26490763), (988, 20377510), (1235, 16302008), (1976, 10188755), (2470, 8151004), (4940, 4075502), (9880, 2037751)]