21064316

素因数分解:

$2^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1181}}^1$

素因数の和:1219

約数の個数: 48

約数和(自身を含む): 46334400

約数和(自身を除く): 25270084

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 343, 364, 637, 686, 1181, 1274, 1372, 2362, 2548, 4459, 4724, 8267, 8918, 15353, 16534, 17836, 30706, 33068, 57869, 61412, 107471, 115738, 214942, 231476, 405083, 429884, 752297, 810166, 1504594, 1620332, 3009188, 5266079, 10532158, 21064316]

約数ペア:

[(1, 21064316), (2, 10532158), (4, 5266079), (7, 3009188), (13, 1620332), (14, 1504594), (26, 810166), (28, 752297), (49, 429884), (52, 405083), (91, 231476), (98, 214942), (182, 115738), (196, 107471), (343, 61412), (364, 57869), (637, 33068), (686, 30706), (1181, 17836), (1274, 16534), (1372, 15353), (2362, 8918), (2548, 8267), (4459, 4724)]