281000356

素因数分解:

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

素因数の和:1461

約数の個数: 72

約数和(自身を含む): 623160384

約数和(自身を除く): 342160028

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 52, 86, 91, 169, 172, 182, 301, 338, 364, 559, 602, 676, 1118, 1183, 1204, 1381, 2236, 2366, 2762, 3913, 4732, 5524, 7267, 7826, 9667, 14534, 15652, 17953, 19334, 29068, 35906, 38668, 50869, 59383, 71812, 101738, 118766, 125671, 203476, 233389, 237532, 251342, 415681, 466778, 502684, 771979, 831362, 933556, 1543958, 1633723, 1662724, 3087916, 3267446, 5403853, 6534892, 10035727, 10807706, 20071454, 21615412, 40142908, 70250089, 140500178, 281000356]

約数ペア:

[(1, 281000356), (2, 140500178), (4, 70250089), (7, 40142908), (13, 21615412), (14, 20071454), (26, 10807706), (28, 10035727), (43, 6534892), (52, 5403853), (86, 3267446), (91, 3087916), (169, 1662724), (172, 1633723), (182, 1543958), (301, 933556), (338, 831362), (364, 771979), (559, 502684), (602, 466778), (676, 415681), (1118, 251342), (1183, 237532), (1204, 233389), (1381, 203476), (2236, 125671), (2366, 118766), (2762, 101738), (3913, 71812), (4732, 59383), (5524, 50869), (7267, 38668), (7826, 35906), (9667, 29068), (14534, 19334), (15652, 17953)]