20021001

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 16750839

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 59, 77, 91, 113, 143, 177, 231, 273, 339, 413, 429, 649, 767, 791, 1001, 1239, 1243, 1469, 1947, 2301, 2373, 3003, 3729, 4407, 4543, 5369, 6667, 8437, 8701, 10283, 13629, 16107, 16159, 20001, 25311, 26103, 30849, 46669, 48477, 59059, 73337, 86671, 113113, 140007, 177177, 220011, 260013, 339339, 513359, 606697, 953381, 1540077, 1820091, 2860143, 6673667, 20021001]

約数ペア:

[(1, 20021001), (3, 6673667), (7, 2860143), (11, 1820091), (13, 1540077), (21, 953381), (33, 606697), (39, 513359), (59, 339339), (77, 260013), (91, 220011), (113, 177177), (143, 140007), (177, 113113), (231, 86671), (273, 73337), (339, 59059), (413, 48477), (429, 46669), (649, 30849), (767, 26103), (791, 25311), (1001, 20001), (1239, 16159), (1243, 16107), (1469, 13629), (1947, 10283), (2301, 8701), (2373, 8437), (3003, 6667), (3729, 5369), (4407, 4543)]