20700880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13619}}^1$

素因数の和:13651

約数の個数: 40

約数和(自身を含む): 50666400

約数和(自身を除く): 29965520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13619, 27238, 54476, 68095, 108952, 136190, 217904, 258761, 272380, 517522, 544760, 1035044, 1089520, 1293805, 2070088, 2587610, 4140176, 5175220, 10350440, 20700880]

約数ペア:

[(1, 20700880), (2, 10350440), (4, 5175220), (5, 4140176), (8, 2587610), (10, 2070088), (16, 1293805), (19, 1089520), (20, 1035044), (38, 544760), (40, 517522), (76, 272380), (80, 258761), (95, 217904), (152, 136190), (190, 108952), (304, 68095), (380, 54476), (760, 27238), (1520, 13619)]