31008920

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{4283}}^1$

素因数の和:4475

約数の個数: 32

約数和(自身を含む): 70171920

約数和(自身を除く): 39163000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 4283, 7240, 8566, 17132, 21415, 34264, 42830, 85660, 171320, 775223, 1550446, 3100892, 3876115, 6201784, 7752230, 15504460, 31008920]

約数ペア:

[(1, 31008920), (2, 15504460), (4, 7752230), (5, 6201784), (8, 3876115), (10, 3100892), (20, 1550446), (40, 775223), (181, 171320), (362, 85660), (724, 42830), (905, 34264), (1448, 21415), (1810, 17132), (3620, 8566), (4283, 7240)]