20668896

素因数分解:

$2^5\times 3^2\times {\mathrm{43}}^1\times {\mathrm{1669}}^1$

素因数の和:1728

約数の個数: 72

約数和(自身を含む): 60180120

約数和(自身を除く): 39511224

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 43, 48, 72, 86, 96, 129, 144, 172, 258, 288, 344, 387, 516, 688, 774, 1032, 1376, 1548, 1669, 2064, 3096, 3338, 4128, 5007, 6192, 6676, 10014, 12384, 13352, 15021, 20028, 26704, 30042, 40056, 53408, 60084, 71767, 80112, 120168, 143534, 160224, 215301, 240336, 287068, 430602, 480672, 574136, 645903, 861204, 1148272, 1291806, 1722408, 2296544, 2583612, 3444816, 5167224, 6889632, 10334448, 20668896]

約数ペア:

[(1, 20668896), (2, 10334448), (3, 6889632), (4, 5167224), (6, 3444816), (8, 2583612), (9, 2296544), (12, 1722408), (16, 1291806), (18, 1148272), (24, 861204), (32, 645903), (36, 574136), (43, 480672), (48, 430602), (72, 287068), (86, 240336), (96, 215301), (129, 160224), (144, 143534), (172, 120168), (258, 80112), (288, 71767), (344, 60084), (387, 53408), (516, 40056), (688, 30042), (774, 26704), (1032, 20028), (1376, 15021), (1548, 13352), (1669, 12384), (2064, 10014), (3096, 6676), (3338, 6192), (4128, 5007)]