20512483145

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{262459}}^1$

素因数の和:262518

約数の個数: 48

約数和(自身を含む): 32314075200

約数和(自身を除く): 11801592055

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, 262459, 1312295, 1837213, 2887049, 7611311, 9186065, 12860491, 14435245, 20209343, 38056555, 53279177, 64302455, 83724421, 101046715, 141465401, 266395885, 372954239, 418622105, 586070947, 707327005, 1864771195, 2930354735, 4102496629, 20512483145]

約数ペア:

[(1, 20512483145), (5, 4102496629), (7, 2930354735), (11, 1864771195), (29, 707327005), (35, 586070947), (49, 418622105), (55, 372954239), (77, 266395885), (145, 141465401), (203, 101046715), (245, 83724421), (319, 64302455), (385, 53279177), (539, 38056555), (1015, 20209343), (1421, 14435245), (1595, 12860491), (2233, 9186065), (2695, 7611311), (7105, 2887049), (11165, 1837213), (15631, 1312295), (78155, 262459)]