21543171

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 32428032

約数和(自身を除く): 10884861

約数列:

[1, 3, 13, 31, 39, 93, 103, 173, 309, 403, 519, 1209, 1339, 2249, 3193, 4017, 5363, 6747, 9579, 16089, 17819, 41509, 53457, 69719, 124527, 209157, 231647, 552389, 694941, 1657167, 7181057, 21543171]

約数ペア:

[(1, 21543171), (3, 7181057), (13, 1657167), (31, 694941), (39, 552389), (93, 231647), (103, 209157), (173, 124527), (309, 69719), (403, 53457), (519, 41509), (1209, 17819), (1339, 16089), (2249, 9579), (3193, 6747), (4017, 5363)]