20701611

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 15150933

約数列:

[1, 3, 7, 9, 21, 37, 63, 83, 107, 111, 249, 259, 321, 333, 581, 747, 749, 777, 963, 1743, 2247, 2331, 3071, 3959, 5229, 6741, 8881, 9213, 11877, 21497, 26643, 27639, 27713, 35631, 62167, 64491, 79929, 83139, 186501, 193473, 249417, 328597, 559503, 985791, 2300179, 2957373, 6900537, 20701611]

約数ペア:

[(1, 20701611), (3, 6900537), (7, 2957373), (9, 2300179), (21, 985791), (37, 559503), (63, 328597), (83, 249417), (107, 193473), (111, 186501), (249, 83139), (259, 79929), (321, 64491), (333, 62167), (581, 35631), (747, 27713), (749, 27639), (777, 26643), (963, 21497), (1743, 11877), (2247, 9213), (2331, 8881), (3071, 6741), (3959, 5229)]