20571327

素因数分解:

$3^4\times 7^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:170

約数の個数: 60

約数和(自身を含む): 36747216

約数和(自身を除く): 16175889

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 71, 73, 81, 147, 189, 213, 219, 441, 497, 511, 567, 639, 657, 1323, 1491, 1533, 1917, 1971, 3479, 3577, 3969, 4473, 4599, 5183, 5751, 5913, 10437, 10731, 13419, 13797, 15549, 31311, 32193, 36281, 40257, 41391, 46647, 93933, 96579, 108843, 139941, 253967, 281799, 289737, 326529, 419823, 761901, 979587, 2285703, 2938761, 6857109, 20571327]

約数ペア:

[(1, 20571327), (3, 6857109), (7, 2938761), (9, 2285703), (21, 979587), (27, 761901), (49, 419823), (63, 326529), (71, 289737), (73, 281799), (81, 253967), (147, 139941), (189, 108843), (213, 96579), (219, 93933), (441, 46647), (497, 41391), (511, 40257), (567, 36281), (639, 32193), (657, 31311), (1323, 15549), (1491, 13797), (1533, 13419), (1917, 10731), (1971, 10437), (3479, 5913), (3577, 5751), (3969, 5183), (4473, 4599)]