21024783

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{601}}^1$

素因数の和:656

約数の個数: 36

約数和(自身を含む): 34371792

約数和(自身を除く): 13347009

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 169, 207, 299, 507, 601, 897, 1521, 1803, 2691, 3887, 5409, 7813, 11661, 13823, 23439, 34983, 41469, 70317, 101569, 124407, 179699, 304707, 539097, 914121, 1617291, 2336087, 7008261, 21024783]

約数ペア:

[(1, 21024783), (3, 7008261), (9, 2336087), (13, 1617291), (23, 914121), (39, 539097), (69, 304707), (117, 179699), (169, 124407), (207, 101569), (299, 70317), (507, 41469), (601, 34983), (897, 23439), (1521, 13823), (1803, 11661), (2691, 7813), (3887, 5409)]