21043503

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{359}}^1$

素因数の和:548

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12825297

約数列:

[1, 3, 9, 13, 27, 39, 117, 167, 351, 359, 501, 1077, 1503, 2171, 3231, 4509, 4667, 6513, 9693, 14001, 19539, 42003, 58617, 59953, 126009, 179859, 539577, 779389, 1618731, 2338167, 7014501, 21043503]

約数ペア:

[(1, 21043503), (3, 7014501), (9, 2338167), (13, 1618731), (27, 779389), (39, 539577), (117, 179859), (167, 126009), (351, 59953), (359, 58617), (501, 42003), (1077, 19539), (1503, 14001), (2171, 9693), (3231, 6513), (4509, 4667)]