21520278

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{91967}}^1$

素因数の和:91988

約数の個数: 24

約数和(自身を含む): 50214528

約数和(自身を除く): 28694250

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 91967, 183934, 275901, 551802, 827703, 1195571, 1655406, 2391142, 3586713, 7173426, 10760139, 21520278]

約数ペア:

[(1, 21520278), (2, 10760139), (3, 7173426), (6, 3586713), (9, 2391142), (13, 1655406), (18, 1195571), (26, 827703), (39, 551802), (78, 275901), (117, 183934), (234, 91967)]