21040480

素因数分解:

$2^5\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1229}}^1$

素因数の和:1351

約数の個数: 48

約数和(自身を含む): 50213520

約数和(自身を除く): 29173040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 107, 160, 214, 428, 535, 856, 1070, 1229, 1712, 2140, 2458, 3424, 4280, 4916, 6145, 8560, 9832, 12290, 17120, 19664, 24580, 39328, 49160, 98320, 131503, 196640, 263006, 526012, 657515, 1052024, 1315030, 2104048, 2630060, 4208096, 5260120, 10520240, 21040480]

約数ペア:

[(1, 21040480), (2, 10520240), (4, 5260120), (5, 4208096), (8, 2630060), (10, 2104048), (16, 1315030), (20, 1052024), (32, 657515), (40, 526012), (80, 263006), (107, 196640), (160, 131503), (214, 98320), (428, 49160), (535, 39328), (856, 24580), (1070, 19664), (1229, 17120), (1712, 12290), (2140, 9832), (2458, 8560), (3424, 6145), (4280, 4916)]