21230825

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 33747840

約数和(自身を除く): 12517015

約数列:

[1, 5, 7, 11, 25, 35, 41, 55, 77, 175, 205, 269, 275, 287, 385, 451, 1025, 1345, 1435, 1883, 1925, 2255, 2959, 3157, 6725, 7175, 9415, 11029, 11275, 14795, 15785, 20713, 47075, 55145, 73975, 77203, 78925, 103565, 121319, 275725, 386015, 517825, 606595, 849233, 1930075, 3032975, 4246165, 21230825]

約数ペア:

[(1, 21230825), (5, 4246165), (7, 3032975), (11, 1930075), (25, 849233), (35, 606595), (41, 517825), (55, 386015), (77, 275725), (175, 121319), (205, 103565), (269, 78925), (275, 77203), (287, 73975), (385, 55145), (451, 47075), (1025, 20713), (1345, 15785), (1435, 14795), (1883, 11275), (1925, 11029), (2255, 9415), (2959, 7175), (3157, 6725)]