21288204

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{971}}^1$

素因数の和:1020

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 44030196

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 29, 36, 42, 54, 58, 63, 84, 87, 108, 116, 126, 174, 189, 203, 252, 261, 348, 378, 406, 522, 609, 756, 783, 812, 971, 1044, 1218, 1566, 1827, 1942, 2436, 2913, 3132, 3654, 3884, 5481, 5826, 6797, 7308, 8739, 10962, 11652, 13594, 17478, 20391, 21924, 26217, 27188, 28159, 34956, 40782, 52434, 56318, 61173, 81564, 84477, 104868, 112636, 122346, 168954, 183519, 197113, 244692, 253431, 337908, 367038, 394226, 506862, 591339, 734076, 760293, 788452, 1013724, 1182678, 1520586, 1774017, 2365356, 3041172, 3548034, 5322051, 7096068, 10644102, 21288204]

約数ペア:

[(1, 21288204), (2, 10644102), (3, 7096068), (4, 5322051), (6, 3548034), (7, 3041172), (9, 2365356), (12, 1774017), (14, 1520586), (18, 1182678), (21, 1013724), (27, 788452), (28, 760293), (29, 734076), (36, 591339), (42, 506862), (54, 394226), (58, 367038), (63, 337908), (84, 253431), (87, 244692), (108, 197113), (116, 183519), (126, 168954), (174, 122346), (189, 112636), (203, 104868), (252, 84477), (261, 81564), (348, 61173), (378, 56318), (406, 52434), (522, 40782), (609, 34956), (756, 28159), (783, 27188), (812, 26217), (971, 21924), (1044, 20391), (1218, 17478), (1566, 13594), (1827, 11652), (1942, 10962), (2436, 8739), (2913, 7308), (3132, 6797), (3654, 5826), (3884, 5481)]