21821799

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 9789081

約数列:

[1, 3, 31, 41, 59, 93, 97, 123, 177, 291, 1271, 1829, 2419, 3007, 3813, 3977, 5487, 5723, 7257, 9021, 11931, 17169, 74989, 123287, 177413, 224967, 234643, 369861, 532239, 703929, 7273933, 21821799]

約数ペア:

[(1, 21821799), (3, 7273933), (31, 703929), (41, 532239), (59, 369861), (93, 234643), (97, 224967), (123, 177413), (177, 123287), (291, 74989), (1271, 17169), (1829, 11931), (2419, 9021), (3007, 7257), (3813, 5723), (3977, 5487)]