21066136

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1523}}^1$

素因数の和:1568

約数の個数: 64

約数和(自身を含む): 51206400

約数和(自身を除く): 30140264

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 52, 56, 76, 91, 104, 133, 152, 182, 247, 266, 364, 494, 532, 728, 988, 1064, 1523, 1729, 1976, 3046, 3458, 6092, 6916, 10661, 12184, 13832, 19799, 21322, 28937, 39598, 42644, 57874, 79196, 85288, 115748, 138593, 158392, 202559, 231496, 277186, 376181, 405118, 554372, 752362, 810236, 1108744, 1504724, 1620472, 2633267, 3009448, 5266534, 10533068, 21066136]

約数ペア:

[(1, 21066136), (2, 10533068), (4, 5266534), (7, 3009448), (8, 2633267), (13, 1620472), (14, 1504724), (19, 1108744), (26, 810236), (28, 752362), (38, 554372), (52, 405118), (56, 376181), (76, 277186), (91, 231496), (104, 202559), (133, 158392), (152, 138593), (182, 115748), (247, 85288), (266, 79196), (364, 57874), (494, 42644), (532, 39598), (728, 28937), (988, 21322), (1064, 19799), (1523, 13832), (1729, 12184), (1976, 10661), (3046, 6916), (3458, 6092)]