21741187

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:187

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 4870013

約数列:

[1, 13, 19, 23, 43, 89, 247, 299, 437, 559, 817, 989, 1157, 1691, 2047, 3827, 5681, 10621, 12857, 18791, 21983, 26611, 38893, 49751, 72713, 88021, 244283, 505609, 945269, 1144273, 1672399, 21741187]

約数ペア:

[(1, 21741187), (13, 1672399), (19, 1144273), (23, 945269), (43, 505609), (89, 244283), (247, 88021), (299, 72713), (437, 49751), (559, 38893), (817, 26611), (989, 21983), (1157, 18791), (1691, 12857), (2047, 10621), (3827, 5681)]