21661083

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 33878520

約数和(自身を除く): 12217437

約数列:

[1, 3, 9, 19, 57, 59, 113, 171, 177, 339, 361, 531, 1017, 1083, 1121, 2147, 3249, 3363, 6441, 6667, 10089, 19323, 20001, 21299, 40793, 60003, 63897, 122379, 126673, 191691, 367137, 380019, 1140057, 2406787, 7220361, 21661083]

約数ペア:

[(1, 21661083), (3, 7220361), (9, 2406787), (19, 1140057), (57, 380019), (59, 367137), (113, 191691), (171, 126673), (177, 122379), (339, 63897), (361, 60003), (531, 40793), (1017, 21299), (1083, 20001), (1121, 19323), (2147, 10089), (3249, 6667), (3363, 6441)]