200420920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{715789}}^1$

素因数の和:715807

約数の個数: 32

約数和(自身を含む): 515368800

約数和(自身を除く): 314947880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 715789, 1431578, 2863156, 3578945, 5010523, 5726312, 7157890, 10021046, 14315780, 20042092, 25052615, 28631560, 40084184, 50105230, 100210460, 200420920]

約数ペア:

[(1, 200420920), (2, 100210460), (4, 50105230), (5, 40084184), (7, 28631560), (8, 25052615), (10, 20042092), (14, 14315780), (20, 10021046), (28, 7157890), (35, 5726312), (40, 5010523), (56, 3578945), (70, 2863156), (140, 1431578), (280, 715789)]