81958712

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{661}}^1\times {\mathrm{1409}}^1$

素因数の和:2087

約数の個数: 32

約数和(自身を含む): 168015600

約数和(自身を除く): 86056888

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 661, 1322, 1409, 2644, 2818, 5288, 5636, 7271, 11272, 14542, 15499, 29084, 30998, 58168, 61996, 123992, 931349, 1862698, 3725396, 7450792, 10244839, 20489678, 40979356, 81958712]

約数ペア:

[(1, 81958712), (2, 40979356), (4, 20489678), (8, 10244839), (11, 7450792), (22, 3725396), (44, 1862698), (88, 931349), (661, 123992), (1322, 61996), (1409, 58168), (2644, 30998), (2818, 29084), (5288, 15499), (5636, 14542), (7271, 11272)]