257689838

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:353

約数の個数: 64

約数和(自身を含む): 479001600

約数和(自身を除く): 221311762

約数列:

[1, 2, 7, 14, 23, 41, 46, 82, 131, 149, 161, 262, 287, 298, 322, 574, 917, 943, 1043, 1834, 1886, 2086, 3013, 3427, 5371, 6026, 6109, 6601, 6854, 10742, 12218, 13202, 19519, 21091, 23989, 37597, 39038, 42182, 42763, 47978, 75194, 85526, 123533, 136633, 140507, 247066, 273266, 281014, 448937, 800279, 864731, 897874, 983549, 1600558, 1729462, 1967098, 3142559, 5601953, 6285118, 11203906, 18406417, 36812834, 128844919, 257689838]

約数ペア:

[(1, 257689838), (2, 128844919), (7, 36812834), (14, 18406417), (23, 11203906), (41, 6285118), (46, 5601953), (82, 3142559), (131, 1967098), (149, 1729462), (161, 1600558), (262, 983549), (287, 897874), (298, 864731), (322, 800279), (574, 448937), (917, 281014), (943, 273266), (1043, 247066), (1834, 140507), (1886, 136633), (2086, 123533), (3013, 85526), (3427, 75194), (5371, 47978), (6026, 42763), (6109, 42182), (6601, 39038), (6854, 37597), (10742, 23989), (12218, 21091), (13202, 19519)]