28372239

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{6343}}^1$

素因数の和:6427

約数の個数: 24

約数和(自身を含む): 47503872

約数和(自身を除く): 19131633

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 6343, 19029, 44401, 57087, 133203, 399609, 450353, 1351059, 3152471, 4053177, 9457413, 28372239]

約数ペア:

[(1, 28372239), (3, 9457413), (7, 4053177), (9, 3152471), (21, 1351059), (63, 450353), (71, 399609), (213, 133203), (497, 57087), (639, 44401), (1491, 19029), (4473, 6343)]