31861791

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 53385696

約数和(自身を除く): 21523905

約数列:

[1, 3, 9, 13, 17, 39, 51, 83, 117, 153, 193, 221, 249, 579, 663, 747, 1079, 1411, 1737, 1989, 2509, 3237, 3281, 4233, 7527, 9711, 9843, 12699, 16019, 18343, 22581, 29529, 42653, 48057, 55029, 127959, 144171, 165087, 208247, 272323, 383877, 624741, 816969, 1874223, 2450907, 3540199, 10620597, 31861791]

約数ペア:

[(1, 31861791), (3, 10620597), (9, 3540199), (13, 2450907), (17, 1874223), (39, 816969), (51, 624741), (83, 383877), (117, 272323), (153, 208247), (193, 165087), (221, 144171), (249, 127959), (579, 55029), (663, 48057), (747, 42653), (1079, 29529), (1411, 22581), (1737, 18343), (1989, 16019), (2509, 12699), (3237, 9843), (3281, 9711), (4233, 7527)]