21891998

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{6703}}^1$

素因数の和:6799

約数の個数: 16

約数和(自身を含む): 34753536

約数和(自身を除く): 12861538

約数列:

[1, 2, 23, 46, 71, 142, 1633, 3266, 6703, 13406, 154169, 308338, 475913, 951826, 10945999, 21891998]

約数ペア:

[(1, 21891998), (2, 10945999), (23, 951826), (46, 475913), (71, 308338), (142, 154169), (1633, 13406), (3266, 6703)]