19900916

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{16529}}^1$

素因数の和:16583

約数の個数: 24

約数和(自身を含む): 40729920

約数和(自身を除く): 20829004

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 16529, 33058, 66116, 115703, 231406, 462812, 710747, 1421494, 2842988, 4975229, 9950458, 19900916]

約数ペア:

[(1, 19900916), (2, 9950458), (4, 4975229), (7, 2842988), (14, 1421494), (28, 710747), (43, 462812), (86, 231406), (172, 115703), (301, 66116), (602, 33058), (1204, 16529)]