21420252

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{12143}}^1$

素因数の和:12167

約数の個数: 54

約数和(自身を含む): 62990928

約数和(自身を除く): 41570676

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 441, 588, 882, 1764, 12143, 24286, 36429, 48572, 72858, 85001, 109287, 145716, 170002, 218574, 255003, 340004, 437148, 510006, 595007, 765009, 1020012, 1190014, 1530018, 1785021, 2380028, 3060036, 3570042, 5355063, 7140084, 10710126, 21420252]

約数ペア:

[(1, 21420252), (2, 10710126), (3, 7140084), (4, 5355063), (6, 3570042), (7, 3060036), (9, 2380028), (12, 1785021), (14, 1530018), (18, 1190014), (21, 1020012), (28, 765009), (36, 595007), (42, 510006), (49, 437148), (63, 340004), (84, 255003), (98, 218574), (126, 170002), (147, 145716), (196, 109287), (252, 85001), (294, 72858), (441, 48572), (588, 36429), (882, 24286), (1764, 12143)]