21284426

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1\times {\mathrm{823}}^1$

素因数の和:1085

約数の個数: 16

約数和(自身を含む): 32610624

約数和(自身を除く): 11326198

約数列:

[1, 2, 67, 134, 193, 386, 823, 1646, 12931, 25862, 55141, 110282, 158839, 317678, 10642213, 21284426]

約数ペア:

[(1, 21284426), (2, 10642213), (67, 317678), (134, 158839), (193, 110282), (386, 55141), (823, 25862), (1646, 12931)]