1888571997

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{797}}^1$

素因数の和:1019

約数の個数: 64

約数和(自身を含む): 3106709760

約数和(自身を除く): 1218137763

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 157, 351, 387, 471, 559, 797, 1161, 1413, 1677, 2041, 2391, 4239, 5031, 6123, 6751, 7173, 10361, 15093, 18369, 20253, 21519, 31083, 34271, 55107, 60759, 87763, 93249, 102813, 125129, 182277, 263289, 279747, 308439, 375387, 445523, 789867, 925317, 1126161, 1336569, 1626677, 2369601, 3378483, 4009707, 4880031, 5380547, 12029121, 14640093, 16141641, 43920279, 48424923, 69947111, 145274769, 209841333, 629523999, 1888571997]

約数ペア:

[(1, 1888571997), (3, 629523999), (9, 209841333), (13, 145274769), (27, 69947111), (39, 48424923), (43, 43920279), (117, 16141641), (129, 14640093), (157, 12029121), (351, 5380547), (387, 4880031), (471, 4009707), (559, 3378483), (797, 2369601), (1161, 1626677), (1413, 1336569), (1677, 1126161), (2041, 925317), (2391, 789867), (4239, 445523), (5031, 375387), (6123, 308439), (6751, 279747), (7173, 263289), (10361, 182277), (15093, 125129), (18369, 102813), (20253, 93249), (21519, 87763), (31083, 60759), (34271, 55107)]