20553183

素因数分解:

$3^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 36132096

約数和(自身を除く): 15578913

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 243, 281, 301, 387, 567, 843, 903, 1161, 1701, 1967, 2529, 2709, 3483, 5901, 7587, 8127, 10449, 12083, 17703, 22761, 24381, 36249, 53109, 68283, 73143, 84581, 108747, 159327, 253743, 326241, 477981, 761229, 978723, 2283687, 2936169, 6851061, 20553183]

約数ペア:

[(1, 20553183), (3, 6851061), (7, 2936169), (9, 2283687), (21, 978723), (27, 761229), (43, 477981), (63, 326241), (81, 253743), (129, 159327), (189, 108747), (243, 84581), (281, 73143), (301, 68283), (387, 53109), (567, 36249), (843, 24381), (903, 22761), (1161, 17703), (1701, 12083), (1967, 10449), (2529, 8127), (2709, 7587), (3483, 5901)]