18987438

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 48

約数和(自身を含む): 40752720

約数和(自身を除く): 21765282

約数列:

[1, 2, 3, 6, 31, 37, 62, 74, 89, 93, 111, 178, 186, 222, 267, 534, 961, 1147, 1922, 2294, 2759, 2883, 3293, 3441, 5518, 5766, 6586, 6882, 8277, 9879, 16554, 19758, 35557, 71114, 85529, 102083, 106671, 171058, 204166, 213342, 256587, 306249, 513174, 612498, 3164573, 6329146, 9493719, 18987438]

約数ペア:

[(1, 18987438), (2, 9493719), (3, 6329146), (6, 3164573), (31, 612498), (37, 513174), (62, 306249), (74, 256587), (89, 213342), (93, 204166), (111, 171058), (178, 106671), (186, 102083), (222, 85529), (267, 71114), (534, 35557), (961, 19758), (1147, 16554), (1922, 9879), (2294, 8277), (2759, 6882), (2883, 6586), (3293, 5766), (3441, 5518)]