19816515

素因数分解:

$3^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{641}}^1$

素因数の和:884

約数の個数: 32

約数和(自身を含む): 35438400

約数和(自身を除く): 15621885

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 229, 641, 687, 1145, 1923, 2061, 3205, 3435, 5769, 6183, 9615, 10305, 17307, 28845, 30915, 86535, 146789, 440367, 733945, 1321101, 2201835, 3963303, 6605505, 19816515]

約数ペア:

[(1, 19816515), (3, 6605505), (5, 3963303), (9, 2201835), (15, 1321101), (27, 733945), (45, 440367), (135, 146789), (229, 86535), (641, 30915), (687, 28845), (1145, 17307), (1923, 10305), (2061, 9615), (3205, 6183), (3435, 5769)]