21639135

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{499}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 41040000

約数和(自身を除く): 19400865

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 59, 105, 147, 177, 245, 295, 413, 499, 735, 885, 1239, 1497, 2065, 2495, 2891, 3493, 6195, 7485, 8673, 10479, 14455, 17465, 24451, 29441, 43365, 52395, 73353, 88323, 122255, 147205, 206087, 366765, 441615, 618261, 1030435, 1442609, 3091305, 4327827, 7213045, 21639135]

約数ペア:

[(1, 21639135), (3, 7213045), (5, 4327827), (7, 3091305), (15, 1442609), (21, 1030435), (35, 618261), (49, 441615), (59, 366765), (105, 206087), (147, 147205), (177, 122255), (245, 88323), (295, 73353), (413, 52395), (499, 43365), (735, 29441), (885, 24451), (1239, 17465), (1497, 14455), (2065, 10479), (2495, 8673), (2891, 7485), (3493, 6195)]