87974684

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 181621440

約数和(自身を除く): 93646756

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 197, 287, 389, 394, 574, 778, 788, 1148, 1379, 1556, 2723, 2758, 5446, 5516, 8077, 10892, 15949, 16154, 31898, 32308, 56539, 63796, 76633, 111643, 113078, 153266, 223286, 226156, 306532, 446572, 536431, 1072862, 2145724, 3141953, 6283906, 12567812, 21993671, 43987342, 87974684]

約数ペア:

[(1, 87974684), (2, 43987342), (4, 21993671), (7, 12567812), (14, 6283906), (28, 3141953), (41, 2145724), (82, 1072862), (164, 536431), (197, 446572), (287, 306532), (389, 226156), (394, 223286), (574, 153266), (778, 113078), (788, 111643), (1148, 76633), (1379, 63796), (1556, 56539), (2723, 32308), (2758, 31898), (5446, 16154), (5516, 15949), (8077, 10892)]