21101928155

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{270001}}^1$

素因数の和:270060

約数の個数: 48

約数和(自身を含む): 33242646240

約数和(自身を除く): 12140718085

約数列:

[1, 5, 7, 11, 29, 35, 49, 55, 77, 145, 203, 245, 319, 385, 539, 1015, 1421, 1595, 2233, 2695, 7105, 11165, 15631, 78155, 270001, 1350005, 1890007, 2970011, 7830029, 9450035, 13230049, 14850055, 20790077, 39150145, 54810203, 66150245, 86130319, 103950385, 145530539, 274051015, 383671421, 430651595, 602912233, 727652695, 1918357105, 3014561165, 4220385631, 21101928155]

約数ペア:

[(1, 21101928155), (5, 4220385631), (7, 3014561165), (11, 1918357105), (29, 727652695), (35, 602912233), (49, 430651595), (55, 383671421), (77, 274051015), (145, 145530539), (203, 103950385), (245, 86130319), (319, 66150245), (385, 54810203), (539, 39150145), (1015, 20790077), (1421, 14850055), (1595, 13230049), (2233, 9450035), (2695, 7830029), (7105, 2970011), (11165, 1890007), (15631, 1350005), (78155, 270001)]