140820920

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{7229}}^1$

素因数の和:7727

約数の個数: 32

約数和(自身を含む): 317541600

約数和(自身を除く): 176720680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4870, 7229, 9740, 14458, 19480, 28916, 36145, 57832, 72290, 144580, 289160, 3520523, 7041046, 14082092, 17602615, 28164184, 35205230, 70410460, 140820920]

約数ペア:

[(1, 140820920), (2, 70410460), (4, 35205230), (5, 28164184), (8, 17602615), (10, 14082092), (20, 7041046), (40, 3520523), (487, 289160), (974, 144580), (1948, 72290), (2435, 57832), (3896, 36145), (4870, 28916), (7229, 19480), (9740, 14458)]