18743918

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 31168800

約数和(自身を除く): 12424882

約数列:

[1, 2, 19, 29, 38, 58, 73, 146, 233, 466, 551, 1102, 1387, 2117, 2774, 4234, 4427, 6757, 8854, 13514, 17009, 34018, 40223, 80446, 128383, 256766, 323171, 493261, 646342, 986522, 9371959, 18743918]

約数ペア:

[(1, 18743918), (2, 9371959), (19, 986522), (29, 646342), (38, 493261), (58, 323171), (73, 256766), (146, 128383), (233, 80446), (466, 40223), (551, 34018), (1102, 17009), (1387, 13514), (2117, 8854), (2774, 6757), (4234, 4427)]