20390762

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 18022678

約数列:

[1, 2, 7, 14, 19, 38, 47, 49, 94, 98, 133, 233, 266, 329, 466, 658, 893, 931, 1631, 1786, 1862, 2303, 3262, 4427, 4606, 6251, 8854, 10951, 11417, 12502, 21902, 22834, 30989, 43757, 61978, 76657, 87514, 153314, 208069, 216923, 416138, 433846, 536599, 1073198, 1456483, 2912966, 10195381, 20390762]

約数ペア:

[(1, 20390762), (2, 10195381), (7, 2912966), (14, 1456483), (19, 1073198), (38, 536599), (47, 433846), (49, 416138), (94, 216923), (98, 208069), (133, 153314), (233, 87514), (266, 76657), (329, 61978), (466, 43757), (658, 30989), (893, 22834), (931, 21902), (1631, 12502), (1786, 11417), (1862, 10951), (2303, 8854), (3262, 6251), (4427, 4606)]