21615412

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1381}}^1$

素因数の和:1448

約数の個数: 48

約数和(自身を含む): 47673472

約数和(自身を除く): 26058060

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 52, 86, 91, 172, 182, 301, 364, 559, 602, 1118, 1204, 1381, 2236, 2762, 3913, 5524, 7826, 9667, 15652, 17953, 19334, 35906, 38668, 59383, 71812, 118766, 125671, 237532, 251342, 415681, 502684, 771979, 831362, 1543958, 1662724, 3087916, 5403853, 10807706, 21615412]

約数ペア:

[(1, 21615412), (2, 10807706), (4, 5403853), (7, 3087916), (13, 1662724), (14, 1543958), (26, 831362), (28, 771979), (43, 502684), (52, 415681), (86, 251342), (91, 237532), (172, 125671), (182, 118766), (301, 71812), (364, 59383), (559, 38668), (602, 35906), (1118, 19334), (1204, 17953), (1381, 15652), (2236, 9667), (2762, 7826), (3913, 5524)]