18889971

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 27820800

約数和(自身を除く): 8930829

約数列:

[1, 3, 19, 41, 57, 59, 123, 137, 177, 411, 779, 1121, 2337, 2419, 2603, 3363, 5617, 7257, 7809, 8083, 16851, 24249, 45961, 106723, 137883, 153577, 320169, 331403, 460731, 994209, 6296657, 18889971]

約数ペア:

[(1, 18889971), (3, 6296657), (19, 994209), (41, 460731), (57, 331403), (59, 320169), (123, 153577), (137, 137883), (177, 106723), (411, 45961), (779, 24249), (1121, 16851), (2337, 8083), (2419, 7809), (2603, 7257), (3363, 5617)]