31421320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{383}}^1$

素因数の和:694

約数の個数: 64

約数和(自身を含む): 81285120

約数和(自身を除く): 49863800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 293, 383, 586, 766, 1172, 1465, 1532, 1915, 2051, 2344, 2681, 2930, 3064, 3830, 4102, 5362, 5860, 7660, 8204, 10255, 10724, 11720, 13405, 15320, 16408, 20510, 21448, 26810, 41020, 53620, 82040, 107240, 112219, 224438, 448876, 561095, 785533, 897752, 1122190, 1571066, 2244380, 3142132, 3927665, 4488760, 6284264, 7855330, 15710660, 31421320]

約数ペア:

[(1, 31421320), (2, 15710660), (4, 7855330), (5, 6284264), (7, 4488760), (8, 3927665), (10, 3142132), (14, 2244380), (20, 1571066), (28, 1122190), (35, 897752), (40, 785533), (56, 561095), (70, 448876), (140, 224438), (280, 112219), (293, 107240), (383, 82040), (586, 53620), (766, 41020), (1172, 26810), (1465, 21448), (1532, 20510), (1915, 16408), (2051, 15320), (2344, 13405), (2681, 11720), (2930, 10724), (3064, 10255), (3830, 8204), (4102, 7660), (5362, 5860)]