19663641

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:275

約数の個数: 40

約数和(自身を含む): 31223808

約数和(自身を除く): 11560167

約数列:

[1, 3, 9, 27, 31, 41, 81, 93, 123, 191, 279, 369, 573, 837, 1107, 1271, 1719, 2511, 3321, 3813, 5157, 5921, 7831, 11439, 15471, 17763, 23493, 34317, 53289, 70479, 102951, 159867, 211437, 242761, 479601, 634311, 728283, 2184849, 6554547, 19663641]

約数ペア:

[(1, 19663641), (3, 6554547), (9, 2184849), (27, 728283), (31, 634311), (41, 479601), (81, 242761), (93, 211437), (123, 159867), (191, 102951), (279, 70479), (369, 53289), (573, 34317), (837, 23493), (1107, 17763), (1271, 15471), (1719, 11439), (2511, 7831), (3321, 5921), (3813, 5157)]