21447699

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{313}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 35449344

約数和(自身を除く): 14001645

約数列:

[1, 3, 7, 13, 21, 39, 91, 251, 273, 313, 753, 939, 1757, 2191, 3263, 4069, 5271, 6573, 9789, 12207, 22841, 28483, 68523, 78563, 85449, 235689, 549941, 1021319, 1649823, 3063957, 7149233, 21447699]

約数ペア:

[(1, 21447699), (3, 7149233), (7, 3063957), (13, 1649823), (21, 1021319), (39, 549941), (91, 235689), (251, 85449), (273, 78563), (313, 68523), (753, 28483), (939, 22841), (1757, 12207), (2191, 9789), (3263, 6573), (4069, 5271)]