20688178

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1367}}^1$

素因数の和:1446

約数の個数: 32

約数和(自身を含む): 37822464

約数和(自身を除く): 17134286

約数列:

[1, 2, 7, 14, 23, 46, 47, 94, 161, 322, 329, 658, 1081, 1367, 2162, 2734, 7567, 9569, 15134, 19138, 31441, 62882, 64249, 128498, 220087, 440174, 449743, 899486, 1477727, 2955454, 10344089, 20688178]

約数ペア:

[(1, 20688178), (2, 10344089), (7, 2955454), (14, 1477727), (23, 899486), (46, 449743), (47, 440174), (94, 220087), (161, 128498), (322, 64249), (329, 62882), (658, 31441), (1081, 19138), (1367, 15134), (2162, 9569), (2734, 7567)]