21129616

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{24917}}^1$

素因数の和:24978

約数の個数: 20

約数和(自身を含む): 41712732

約数和(自身を除く): 20583116

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 24917, 49834, 99668, 199336, 398672, 1320601, 2641202, 5282404, 10564808, 21129616]

約数ペア:

[(1, 21129616), (2, 10564808), (4, 5282404), (8, 2641202), (16, 1320601), (53, 398672), (106, 199336), (212, 99668), (424, 49834), (848, 24917)]