20666870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1$

素因数の和:453

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 25297930

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 41, 70, 82, 95, 133, 190, 205, 266, 287, 379, 410, 574, 665, 758, 779, 1330, 1435, 1558, 1895, 2653, 2870, 3790, 3895, 5306, 5453, 7201, 7790, 10906, 13265, 14402, 15539, 26530, 27265, 31078, 36005, 50407, 54530, 72010, 77695, 100814, 108773, 155390, 217546, 252035, 295241, 504070, 543865, 590482, 1087730, 1476205, 2066687, 2952410, 4133374, 10333435, 20666870]

約数ペア:

[(1, 20666870), (2, 10333435), (5, 4133374), (7, 2952410), (10, 2066687), (14, 1476205), (19, 1087730), (35, 590482), (38, 543865), (41, 504070), (70, 295241), (82, 252035), (95, 217546), (133, 155390), (190, 108773), (205, 100814), (266, 77695), (287, 72010), (379, 54530), (410, 50407), (574, 36005), (665, 31078), (758, 27265), (779, 26530), (1330, 15539), (1435, 14402), (1558, 13265), (1895, 10906), (2653, 7790), (2870, 7201), (3790, 5453), (3895, 5306)]