21000643172

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{379}}^1\times {\mathrm{142811}}^1$

素因数の和:143291

約数の個数: 24

約数和(自身を含む): 37228232160

約数和(自身を除く): 16227588988

約数列:

[1, 2, 4, 97, 194, 379, 388, 758, 1516, 36763, 73526, 142811, 147052, 285622, 571244, 13852667, 27705334, 54125369, 55410668, 108250738, 216501476, 5250160793, 10500321586, 21000643172]

約数ペア:

[(1, 21000643172), (2, 10500321586), (4, 5250160793), (97, 216501476), (194, 108250738), (379, 55410668), (388, 54125369), (758, 27705334), (1516, 13852667), (36763, 571244), (73526, 285622), (142811, 147052)]