21052456

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3221}}^1$

素因数の和:3289

約数の個数: 32

約数和(自身を含む): 42530400

約数和(自身を除く): 21477944

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 152, 172, 344, 817, 1634, 3221, 3268, 6442, 6536, 12884, 25768, 61199, 122398, 138503, 244796, 277006, 489592, 554012, 1108024, 2631557, 5263114, 10526228, 21052456]

約数ペア:

[(1, 21052456), (2, 10526228), (4, 5263114), (8, 2631557), (19, 1108024), (38, 554012), (43, 489592), (76, 277006), (86, 244796), (152, 138503), (172, 122398), (344, 61199), (817, 25768), (1634, 12884), (3221, 6536), (3268, 6442)]