21242518

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{1439}}^1$

素因数の和:1524

約数の個数: 24

約数和(自身を含む): 35622720

約数和(自身を除く): 14380202

約数列:

[1, 2, 11, 22, 61, 121, 122, 242, 671, 1342, 1439, 2878, 7381, 14762, 15829, 31658, 87779, 174119, 175558, 348238, 965569, 1931138, 10621259, 21242518]

約数ペア:

[(1, 21242518), (2, 10621259), (11, 1931138), (22, 965569), (61, 348238), (121, 175558), (122, 174119), (242, 87779), (671, 31658), (1342, 15829), (1439, 14762), (2878, 7381)]