81573764

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{557}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 157489920

約数和(自身を除く): 75916156

約数列:

[1, 2, 4, 19, 38, 41, 47, 76, 82, 94, 164, 188, 557, 779, 893, 1114, 1558, 1786, 1927, 2228, 3116, 3572, 3854, 7708, 10583, 21166, 22837, 26179, 36613, 42332, 45674, 52358, 73226, 91348, 104716, 146452, 433903, 497401, 867806, 994802, 1073339, 1735612, 1989604, 2146678, 4293356, 20393441, 40786882, 81573764]

約数ペア:

[(1, 81573764), (2, 40786882), (4, 20393441), (19, 4293356), (38, 2146678), (41, 1989604), (47, 1735612), (76, 1073339), (82, 994802), (94, 867806), (164, 497401), (188, 433903), (557, 146452), (779, 104716), (893, 91348), (1114, 73226), (1558, 52358), (1786, 45674), (1927, 42332), (2228, 36613), (3116, 26179), (3572, 22837), (3854, 21166), (7708, 10583)]