21205444

素因数分解:

$2^2\times {\mathrm{13}}^3\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:189

約数の個数: 48

約数和(自身を含む): 42649600

約数和(自身を除く): 21444156

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 127, 169, 247, 254, 338, 494, 508, 676, 988, 1651, 2197, 2413, 3211, 3302, 4394, 4826, 6422, 6604, 8788, 9652, 12844, 21463, 31369, 41743, 42926, 62738, 83486, 85852, 125476, 166972, 279019, 407797, 558038, 815594, 1116076, 1631188, 5301361, 10602722, 21205444]

約数ペア:

[(1, 21205444), (2, 10602722), (4, 5301361), (13, 1631188), (19, 1116076), (26, 815594), (38, 558038), (52, 407797), (76, 279019), (127, 166972), (169, 125476), (247, 85852), (254, 83486), (338, 62738), (494, 42926), (508, 41743), (676, 31369), (988, 21463), (1651, 12844), (2197, 9652), (2413, 8788), (3211, 6604), (3302, 6422), (4394, 4826)]