20695160

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12619}}^1$

素因数の和:12671

約数の個数: 32

約数和(自身を含む): 47703600

約数和(自身を除く): 27008440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12619, 25238, 50476, 63095, 100952, 126190, 252380, 504760, 517379, 1034758, 2069516, 2586895, 4139032, 5173790, 10347580, 20695160]

約数ペア:

[(1, 20695160), (2, 10347580), (4, 5173790), (5, 4139032), (8, 2586895), (10, 2069516), (20, 1034758), (40, 517379), (41, 504760), (82, 252380), (164, 126190), (205, 100952), (328, 63095), (410, 50476), (820, 25238), (1640, 12619)]