8438920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{30139}}^1$

素因数の和:30157

約数の個数: 32

約数和(自身を含む): 21700800

約数和(自身を除く): 13261880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 30139, 60278, 120556, 150695, 210973, 241112, 301390, 421946, 602780, 843892, 1054865, 1205560, 1687784, 2109730, 4219460, 8438920]

約数ペア:

[(1, 8438920), (2, 4219460), (4, 2109730), (5, 1687784), (7, 1205560), (8, 1054865), (10, 843892), (14, 602780), (20, 421946), (28, 301390), (35, 241112), (40, 210973), (56, 150695), (70, 120556), (140, 60278), (280, 30139)]