20793975

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 37283328

約数和(自身を除く): 16489353

約数列:

[1, 3, 5, 15, 17, 25, 47, 51, 75, 85, 141, 235, 255, 347, 425, 705, 799, 1041, 1175, 1275, 1735, 2397, 3525, 3995, 5205, 5899, 8675, 11985, 16309, 17697, 19975, 26025, 29495, 48927, 59925, 81545, 88485, 147475, 244635, 277253, 407725, 442425, 831759, 1223175, 1386265, 4158795, 6931325, 20793975]

約数ペア:

[(1, 20793975), (3, 6931325), (5, 4158795), (15, 1386265), (17, 1223175), (25, 831759), (47, 442425), (51, 407725), (75, 277253), (85, 244635), (141, 147475), (235, 88485), (255, 81545), (347, 59925), (425, 48927), (705, 29495), (799, 26025), (1041, 19975), (1175, 17697), (1275, 16309), (1735, 11985), (2397, 8675), (3525, 5899), (3995, 5205)]