21698218

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1\times {\mathrm{839}}^1$

素因数の和:1101

約数の個数: 16

約数和(自身を含む): 33243840

約数和(自身を除く): 11545622

約数列:

[1, 2, 67, 134, 193, 386, 839, 1678, 12931, 25862, 56213, 112426, 161927, 323854, 10849109, 21698218]

約数ペア:

[(1, 21698218), (2, 10849109), (67, 323854), (134, 161927), (193, 112426), (386, 56213), (839, 25862), (1678, 12931)]