21257276

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16453}}^1$

素因数の和:16493

約数の個数: 24

約数和(自身を含む): 41464080

約数和(自身を除く): 20206804

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16453, 32906, 65812, 279701, 312607, 559402, 625214, 1118804, 1250428, 5314319, 10628638, 21257276]

約数ペア:

[(1, 21257276), (2, 10628638), (4, 5314319), (17, 1250428), (19, 1118804), (34, 625214), (38, 559402), (68, 312607), (76, 279701), (323, 65812), (646, 32906), (1292, 16453)]