20691040

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7607}}^1$

素因数の和:7639

約数の個数: 48

約数和(自身を含む): 51764832

約数和(自身を除く): 31073792

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7607, 15214, 30428, 38035, 60856, 76070, 121712, 129319, 152140, 243424, 258638, 304280, 517276, 608560, 646595, 1034552, 1217120, 1293190, 2069104, 2586380, 4138208, 5172760, 10345520, 20691040]

約数ペア:

[(1, 20691040), (2, 10345520), (4, 5172760), (5, 4138208), (8, 2586380), (10, 2069104), (16, 1293190), (17, 1217120), (20, 1034552), (32, 646595), (34, 608560), (40, 517276), (68, 304280), (80, 258638), (85, 243424), (136, 152140), (160, 129319), (170, 121712), (272, 76070), (340, 60856), (544, 38035), (680, 30428), (1360, 15214), (2720, 7607)]