19975527

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 36599472

約数和(自身を除く): 16623945

約数列:

[1, 3, 9, 11, 13, 17, 33, 39, 51, 83, 99, 117, 121, 143, 153, 187, 221, 249, 363, 429, 561, 663, 747, 913, 1079, 1089, 1287, 1411, 1573, 1683, 1989, 2057, 2431, 2739, 3237, 4233, 4719, 6171, 7293, 8217, 9711, 10043, 11869, 12699, 14157, 15521, 18343, 18513, 21879, 26741, 30129, 35607, 46563, 55029, 80223, 90387, 106821, 130559, 139689, 165087, 170731, 201773, 240669, 391677, 512193, 605319, 1175031, 1536579, 1815957, 2219503, 6658509, 19975527]

約数ペア:

[(1, 19975527), (3, 6658509), (9, 2219503), (11, 1815957), (13, 1536579), (17, 1175031), (33, 605319), (39, 512193), (51, 391677), (83, 240669), (99, 201773), (117, 170731), (121, 165087), (143, 139689), (153, 130559), (187, 106821), (221, 90387), (249, 80223), (363, 55029), (429, 46563), (561, 35607), (663, 30129), (747, 26741), (913, 21879), (1079, 18513), (1089, 18343), (1287, 15521), (1411, 14157), (1573, 12699), (1683, 11869), (1989, 10043), (2057, 9711), (2431, 8217), (2739, 7293), (3237, 6171), (4233, 4719)]