21452368

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{593}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 53032320

約数和(自身を除く): 31579952

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 19, 28, 34, 38, 56, 68, 76, 112, 119, 133, 136, 152, 238, 266, 272, 304, 323, 476, 532, 593, 646, 952, 1064, 1186, 1292, 1904, 2128, 2261, 2372, 2584, 4151, 4522, 4744, 5168, 8302, 9044, 9488, 10081, 11267, 16604, 18088, 20162, 22534, 33208, 36176, 40324, 45068, 66416, 70567, 78869, 80648, 90136, 141134, 157738, 161296, 180272, 191539, 282268, 315476, 383078, 564536, 630952, 766156, 1129072, 1261904, 1340773, 1532312, 2681546, 3064624, 5363092, 10726184, 21452368]

約数ペア:

[(1, 21452368), (2, 10726184), (4, 5363092), (7, 3064624), (8, 2681546), (14, 1532312), (16, 1340773), (17, 1261904), (19, 1129072), (28, 766156), (34, 630952), (38, 564536), (56, 383078), (68, 315476), (76, 282268), (112, 191539), (119, 180272), (133, 161296), (136, 157738), (152, 141134), (238, 90136), (266, 80648), (272, 78869), (304, 70567), (323, 66416), (476, 45068), (532, 40324), (593, 36176), (646, 33208), (952, 22534), (1064, 20162), (1186, 18088), (1292, 16604), (1904, 11267), (2128, 10081), (2261, 9488), (2372, 9044), (2584, 8302), (4151, 5168), (4522, 4744)]