21719536

素因数分解:

$2^4\times {\mathrm{409}}^1\times {\mathrm{3319}}^1$

素因数の和:3736

約数の個数: 20

約数和(自身を含む): 42197200

約数和(自身を除く): 20477664

約数列:

[1, 2, 4, 8, 16, 409, 818, 1636, 3272, 3319, 6544, 6638, 13276, 26552, 53104, 1357471, 2714942, 5429884, 10859768, 21719536]

約数ペア:

[(1, 21719536), (2, 10859768), (4, 5429884), (8, 2714942), (16, 1357471), (409, 53104), (818, 26552), (1636, 13276), (3272, 6638), (3319, 6544)]