21271965

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 41029632

約数和(自身を除く): 19757667

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 47, 55, 65, 141, 143, 165, 195, 211, 235, 429, 517, 611, 633, 705, 715, 1055, 1551, 1833, 2145, 2321, 2585, 2743, 3055, 3165, 6721, 6963, 7755, 8229, 9165, 9917, 11605, 13715, 20163, 29751, 30173, 33605, 34815, 41145, 49585, 90519, 100815, 109087, 128921, 148755, 150865, 327261, 386763, 452595, 545435, 644605, 1418131, 1636305, 1933815, 4254393, 7090655, 21271965]

約数ペア:

[(1, 21271965), (3, 7090655), (5, 4254393), (11, 1933815), (13, 1636305), (15, 1418131), (33, 644605), (39, 545435), (47, 452595), (55, 386763), (65, 327261), (141, 150865), (143, 148755), (165, 128921), (195, 109087), (211, 100815), (235, 90519), (429, 49585), (517, 41145), (611, 34815), (633, 33605), (705, 30173), (715, 29751), (1055, 20163), (1551, 13715), (1833, 11605), (2145, 9917), (2321, 9165), (2585, 8229), (2743, 7755), (3055, 6963), (3165, 6721)]