21153258

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{523}}^1$

素因数の和:648

約数の個数: 64

約数和(自身を含む): 54328320

約数和(自身を除く): 33175062

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 107, 126, 189, 214, 321, 378, 523, 642, 749, 963, 1046, 1498, 1569, 1926, 2247, 2889, 3138, 3661, 4494, 4707, 5778, 6741, 7322, 9414, 10983, 13482, 14121, 20223, 21966, 28242, 32949, 40446, 55961, 65898, 98847, 111922, 167883, 197694, 335766, 391727, 503649, 783454, 1007298, 1175181, 1510947, 2350362, 3021894, 3525543, 7051086, 10576629, 21153258]

約数ペア:

[(1, 21153258), (2, 10576629), (3, 7051086), (6, 3525543), (7, 3021894), (9, 2350362), (14, 1510947), (18, 1175181), (21, 1007298), (27, 783454), (42, 503649), (54, 391727), (63, 335766), (107, 197694), (126, 167883), (189, 111922), (214, 98847), (321, 65898), (378, 55961), (523, 40446), (642, 32949), (749, 28242), (963, 21966), (1046, 20223), (1498, 14121), (1569, 13482), (1926, 10983), (2247, 9414), (2889, 7322), (3138, 6741), (3661, 5778), (4494, 4707)]