21640095

素因数分解:

$3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1021}}^1$

素因数の和:1192

約数の個数: 32

約数和(自身を含む): 38754240

約数和(自身を除く): 17114145

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157, 471, 785, 1021, 1413, 2355, 3063, 4239, 5105, 7065, 9189, 15315, 21195, 27567, 45945, 137835, 160297, 480891, 801485, 1442673, 2404455, 4328019, 7213365, 21640095]

約数ペア:

[(1, 21640095), (3, 7213365), (5, 4328019), (9, 2404455), (15, 1442673), (27, 801485), (45, 480891), (135, 160297), (157, 137835), (471, 45945), (785, 27567), (1021, 21195), (1413, 15315), (2355, 9189), (3063, 7065), (4239, 5105)]