81627138

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{2777}}^1$

素因数の和:2879

約数の個数: 48

約数和(自身を含む): 187214976

約数和(自身を除く): 105587838

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 71, 138, 142, 207, 213, 414, 426, 639, 1278, 1633, 2777, 3266, 4899, 5554, 8331, 9798, 14697, 16662, 24993, 29394, 49986, 63871, 127742, 191613, 197167, 383226, 394334, 574839, 591501, 1149678, 1183002, 1774503, 3549006, 4534841, 9069682, 13604523, 27209046, 40813569, 81627138]

約数ペア:

[(1, 81627138), (2, 40813569), (3, 27209046), (6, 13604523), (9, 9069682), (18, 4534841), (23, 3549006), (46, 1774503), (69, 1183002), (71, 1149678), (138, 591501), (142, 574839), (207, 394334), (213, 383226), (414, 197167), (426, 191613), (639, 127742), (1278, 63871), (1633, 49986), (2777, 29394), (3266, 24993), (4899, 16662), (5554, 14697), (8331, 9798)]