19937554945

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2251559}}^1$

素因数の和:2251605

約数の個数: 32

約数和(自身を含む): 31125565440

約数和(自身を除く): 11188010495

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 8855, 2251559, 11257795, 15760913, 24767149, 51785857, 78804565, 123835745, 173370043, 258929285, 362500999, 569644427, 866850215, 1812504995, 2848222135, 3987510989, 19937554945]

約数ペア:

[(1, 19937554945), (5, 3987510989), (7, 2848222135), (11, 1812504995), (23, 866850215), (35, 569644427), (55, 362500999), (77, 258929285), (115, 173370043), (161, 123835745), (253, 78804565), (385, 51785857), (805, 24767149), (1265, 15760913), (1771, 11257795), (8855, 2251559)]