19401620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{997}}^1$

素因数の和:1152

約数の個数: 48

約数和(自身を含む): 46945920

約数和(自身を除く): 27544300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 997, 1390, 1946, 1994, 2780, 3892, 3988, 4865, 4985, 6979, 9730, 9970, 13958, 19460, 19940, 27916, 34895, 69790, 138583, 139580, 277166, 554332, 692915, 970081, 1385830, 1940162, 2771660, 3880324, 4850405, 9700810, 19401620]

約数ペア:

[(1, 19401620), (2, 9700810), (4, 4850405), (5, 3880324), (7, 2771660), (10, 1940162), (14, 1385830), (20, 970081), (28, 692915), (35, 554332), (70, 277166), (139, 139580), (140, 138583), (278, 69790), (556, 34895), (695, 27916), (973, 19940), (997, 19460), (1390, 13958), (1946, 9970), (1994, 9730), (2780, 6979), (3892, 4985), (3988, 4865)]