19401921

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{27997}}^1$

素因数の和:28021

約数の個数: 24

約数和(自身を含む): 34941504

約数和(自身を除く): 15539583

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 27997, 83991, 195979, 251973, 307967, 587937, 923901, 1763811, 2155769, 2771703, 6467307, 19401921]

約数ペア:

[(1, 19401921), (3, 6467307), (7, 2771703), (9, 2155769), (11, 1763811), (21, 923901), (33, 587937), (63, 307967), (77, 251973), (99, 195979), (231, 83991), (693, 27997)]