21916713

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1867}}^1$

素因数の和:1933

約数の個数: 32

約数和(自身を含む): 36822016

約数和(自身を除く): 14905303

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 1867, 3913, 5601, 11739, 13069, 24271, 39207, 72813, 80281, 169897, 240843, 509691, 561967, 1043653, 1685901, 3130959, 7305571, 21916713]

約数ペア:

[(1, 21916713), (3, 7305571), (7, 3130959), (13, 1685901), (21, 1043653), (39, 561967), (43, 509691), (91, 240843), (129, 169897), (273, 80281), (301, 72813), (559, 39207), (903, 24271), (1677, 13069), (1867, 11739), (3913, 5601)]