20511135

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 37180416

約数和(自身を除く): 16669281

約数列:

[1, 3, 5, 9, 15, 37, 45, 97, 111, 127, 185, 291, 333, 381, 485, 555, 635, 873, 1143, 1455, 1665, 1905, 3589, 4365, 4699, 5715, 10767, 12319, 14097, 17945, 23495, 32301, 36957, 42291, 53835, 61595, 70485, 110871, 161505, 184785, 211455, 455803, 554355, 1367409, 2279015, 4102227, 6837045, 20511135]

約数ペア:

[(1, 20511135), (3, 6837045), (5, 4102227), (9, 2279015), (15, 1367409), (37, 554355), (45, 455803), (97, 211455), (111, 184785), (127, 161505), (185, 110871), (291, 70485), (333, 61595), (381, 53835), (485, 42291), (555, 36957), (635, 32301), (873, 23495), (1143, 17945), (1455, 14097), (1665, 12319), (1905, 10767), (3589, 5715), (4365, 4699)]