20526867

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 32947200

約数和(自身を除く): 12420333

約数列:

[1, 3, 9, 29, 31, 43, 59, 87, 93, 129, 177, 261, 279, 387, 531, 899, 1247, 1333, 1711, 1829, 2537, 2697, 3741, 3999, 5133, 5487, 7611, 8091, 11223, 11997, 15399, 16461, 22833, 38657, 53041, 73573, 78647, 115971, 159123, 220719, 235941, 347913, 477369, 662157, 707823, 2280763, 6842289, 20526867]

約数ペア:

[(1, 20526867), (3, 6842289), (9, 2280763), (29, 707823), (31, 662157), (43, 477369), (59, 347913), (87, 235941), (93, 220719), (129, 159123), (177, 115971), (261, 78647), (279, 73573), (387, 53041), (531, 38657), (899, 22833), (1247, 16461), (1333, 15399), (1711, 11997), (1829, 11223), (2537, 8091), (2697, 7611), (3741, 5487), (3999, 5133)]