21997912

素因数分解:

$2^3\times {\mathrm{1151}}^1\times {\mathrm{2389}}^1$

素因数の和:3546

約数の個数: 16

約数和(自身を含む): 41299200

約数和(自身を除く): 19301288

約数列:

[1, 2, 4, 8, 1151, 2302, 2389, 4604, 4778, 9208, 9556, 19112, 2749739, 5499478, 10998956, 21997912]

約数ペア:

[(1, 21997912), (2, 10998956), (4, 5499478), (8, 2749739), (1151, 19112), (2302, 9556), (2389, 9208), (4604, 4778)]