20687240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73883}}^1$

素因数の和:73901

約数の個数: 32

約数和(自身を含む): 53196480

約数和(自身を除く): 32509240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73883, 147766, 295532, 369415, 517181, 591064, 738830, 1034362, 1477660, 2068724, 2585905, 2955320, 4137448, 5171810, 10343620, 20687240]

約数ペア:

[(1, 20687240), (2, 10343620), (4, 5171810), (5, 4137448), (7, 2955320), (8, 2585905), (10, 2068724), (14, 1477660), (20, 1034362), (28, 738830), (35, 591064), (40, 517181), (56, 369415), (70, 295532), (140, 147766), (280, 73883)]