19613421

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:223

約数の個数: 40

約数和(自身を含む): 30945024

約数和(自身を除く): 11331603

約数列:

[1, 3, 9, 27, 31, 73, 81, 93, 107, 219, 279, 321, 657, 837, 963, 1971, 2263, 2511, 2889, 3317, 5913, 6789, 7811, 8667, 9951, 20367, 23433, 29853, 61101, 70299, 89559, 183303, 210897, 242141, 268677, 632691, 726423, 2179269, 6537807, 19613421]

約数ペア:

[(1, 19613421), (3, 6537807), (9, 2179269), (27, 726423), (31, 632691), (73, 268677), (81, 242141), (93, 210897), (107, 183303), (219, 89559), (279, 70299), (321, 61101), (657, 29853), (837, 23433), (963, 20367), (1971, 9951), (2263, 8667), (2511, 7811), (2889, 6789), (3317, 5913)]