21880210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^3\times {\mathrm{29}}^1$

素因数の和:104

約数の個数: 64

約数和(自身を含む): 46915200

約数和(自身を除く): 25034990

約数列:

[1, 2, 5, 10, 11, 19, 22, 29, 38, 55, 58, 95, 110, 145, 190, 209, 290, 319, 361, 418, 551, 638, 722, 1045, 1102, 1595, 1805, 2090, 2755, 3190, 3610, 3971, 5510, 6061, 6859, 7942, 10469, 12122, 13718, 19855, 20938, 30305, 34295, 39710, 52345, 60610, 68590, 75449, 104690, 115159, 150898, 198911, 230318, 377245, 397822, 575795, 754490, 994555, 1151590, 1989110, 2188021, 4376042, 10940105, 21880210]

約数ペア:

[(1, 21880210), (2, 10940105), (5, 4376042), (10, 2188021), (11, 1989110), (19, 1151590), (22, 994555), (29, 754490), (38, 575795), (55, 397822), (58, 377245), (95, 230318), (110, 198911), (145, 150898), (190, 115159), (209, 104690), (290, 75449), (319, 68590), (361, 60610), (418, 52345), (551, 39710), (638, 34295), (722, 30305), (1045, 20938), (1102, 19855), (1595, 13718), (1805, 12122), (2090, 10469), (2755, 7942), (3190, 6859), (3610, 6061), (3971, 5510)]