21493654

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{16871}}^1$

素因数の和:16900

約数の個数: 24

約数和(自身を含む): 40391568

約数和(自身を除く): 18897914

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 637, 1274, 16871, 33742, 118097, 219323, 236194, 438646, 826679, 1535261, 1653358, 3070522, 10746827, 21493654]

約数ペア:

[(1, 21493654), (2, 10746827), (7, 3070522), (13, 1653358), (14, 1535261), (26, 826679), (49, 438646), (91, 236194), (98, 219323), (182, 118097), (637, 33742), (1274, 16871)]