21557529

素因数分解:

$3^3\times 7^1\times {\mathrm{167}}^1\times {\mathrm{683}}^1$

素因数の和:866

約数の個数: 32

約数和(自身を含む): 36771840

約数和(自身を除く): 15214311

約数列:

[1, 3, 7, 9, 21, 27, 63, 167, 189, 501, 683, 1169, 1503, 2049, 3507, 4509, 4781, 6147, 10521, 14343, 18441, 31563, 43029, 114061, 129087, 342183, 798427, 1026549, 2395281, 3079647, 7185843, 21557529]

約数ペア:

[(1, 21557529), (3, 7185843), (7, 3079647), (9, 2395281), (21, 1026549), (27, 798427), (63, 342183), (167, 129087), (189, 114061), (501, 43029), (683, 31563), (1169, 18441), (1503, 14343), (2049, 10521), (3507, 6147), (4509, 4781)]