21031504

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101113}}^1$

素因数の和:101134

約数の個数: 20

約数和(自身を含む): 43883476

約数和(自身を除く): 22851972

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101113, 202226, 404452, 808904, 1314469, 1617808, 2628938, 5257876, 10515752, 21031504]

約数ペア:

[(1, 21031504), (2, 10515752), (4, 5257876), (8, 2628938), (13, 1617808), (16, 1314469), (26, 808904), (52, 404452), (104, 202226), (208, 101113)]