420668829

素因数分解:

$3^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{19697}}^1$

素因数の和:19826

約数の個数: 32

約数和(自身を含む): 718583040

約数和(自身を除く): 297914211

約数列:

[1, 3, 7, 9, 21, 27, 63, 113, 189, 339, 791, 1017, 2373, 3051, 7119, 19697, 21357, 59091, 137879, 177273, 413637, 531819, 1240911, 2225761, 3722733, 6677283, 15580327, 20031849, 46740981, 60095547, 140222943, 420668829]

約数ペア:

[(1, 420668829), (3, 140222943), (7, 60095547), (9, 46740981), (21, 20031849), (27, 15580327), (63, 6677283), (113, 3722733), (189, 2225761), (339, 1240911), (791, 531819), (1017, 413637), (2373, 177273), (3051, 137879), (7119, 59091), (19697, 21357)]