28404520

素因数分解:

$2^3\times 5^1\times {\mathrm{701}}^1\times {\mathrm{1013}}^1$

素因数の和:1725

約数の個数: 32

約数和(自身を含む): 64064520

約数和(自身を除く): 35660000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 701, 1013, 1402, 2026, 2804, 3505, 4052, 5065, 5608, 7010, 8104, 10130, 14020, 20260, 28040, 40520, 710113, 1420226, 2840452, 3550565, 5680904, 7101130, 14202260, 28404520]

約数ペア:

[(1, 28404520), (2, 14202260), (4, 7101130), (5, 5680904), (8, 3550565), (10, 2840452), (20, 1420226), (40, 710113), (701, 40520), (1013, 28040), (1402, 20260), (2026, 14020), (2804, 10130), (3505, 8104), (4052, 7010), (5065, 5608)]