20581182

素因数分解:

$2^1\times 3^3\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 48591360

約数和(自身を除く): 28010178

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 73, 138, 146, 207, 219, 227, 414, 438, 454, 621, 657, 681, 1242, 1314, 1362, 1679, 1971, 2043, 3358, 3942, 4086, 5037, 5221, 6129, 10074, 10442, 12258, 15111, 15663, 16571, 30222, 31326, 33142, 45333, 46989, 49713, 90666, 93978, 99426, 140967, 149139, 281934, 298278, 381133, 447417, 762266, 894834, 1143399, 2286798, 3430197, 6860394, 10290591, 20581182]

約数ペア:

[(1, 20581182), (2, 10290591), (3, 6860394), (6, 3430197), (9, 2286798), (18, 1143399), (23, 894834), (27, 762266), (46, 447417), (54, 381133), (69, 298278), (73, 281934), (138, 149139), (146, 140967), (207, 99426), (219, 93978), (227, 90666), (414, 49713), (438, 46989), (454, 45333), (621, 33142), (657, 31326), (681, 30222), (1242, 16571), (1314, 15663), (1362, 15111), (1679, 12258), (1971, 10442), (2043, 10074), (3358, 6129), (3942, 5221), (4086, 5037)]