20878803

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 34909056

約数和(自身を除く): 14030253

約数列:

[1, 3, 9, 11, 27, 33, 73, 81, 99, 107, 219, 243, 297, 321, 657, 803, 891, 963, 1177, 1971, 2409, 2673, 2889, 3531, 5913, 7227, 7811, 8667, 10593, 17739, 21681, 23433, 26001, 31779, 65043, 70299, 85921, 95337, 195129, 210897, 257763, 286011, 632691, 773289, 1898073, 2319867, 6959601, 20878803]

約数ペア:

[(1, 20878803), (3, 6959601), (9, 2319867), (11, 1898073), (27, 773289), (33, 632691), (73, 286011), (81, 257763), (99, 210897), (107, 195129), (219, 95337), (243, 85921), (297, 70299), (321, 65043), (657, 31779), (803, 26001), (891, 23433), (963, 21681), (1177, 17739), (1971, 10593), (2409, 8667), (2673, 7811), (2889, 7227), (3531, 5913)]