78647240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{280883}}^1$

素因数の和:280901

約数の個数: 32

約数和(自身を含む): 202236480

約数和(自身を除く): 123589240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 280883, 561766, 1123532, 1404415, 1966181, 2247064, 2808830, 3932362, 5617660, 7864724, 9830905, 11235320, 15729448, 19661810, 39323620, 78647240]

約数ペア:

[(1, 78647240), (2, 39323620), (4, 19661810), (5, 15729448), (7, 11235320), (8, 9830905), (10, 7864724), (14, 5617660), (20, 3932362), (28, 2808830), (35, 2247064), (40, 1966181), (56, 1404415), (70, 1123532), (140, 561766), (280, 280883)]