20845223

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:231

約数の個数: 24

約数和(自身を含む): 25712928

約数和(自身を除く): 4867705

約数列:

[1, 7, 19, 73, 113, 133, 361, 511, 791, 1387, 2147, 2527, 8249, 9709, 15029, 26353, 40793, 57743, 156731, 184471, 285551, 1097117, 2977889, 20845223]

約数ペア:

[(1, 20845223), (7, 2977889), (19, 1097117), (73, 285551), (113, 184471), (133, 156731), (361, 57743), (511, 40793), (791, 26353), (1387, 15029), (2147, 9709), (2527, 8249)]